Juniper

BGP session reset vulnerability in Juniper Networks Junos OS 25.2 and Junos OS Evolved 25.2-EVO allows adjacent unauthenticated attackers to trigger Denial of Service by sending malformed BGP packets within established sessions. Affects both eBGP and iBGP implementations across IPv4 and IPv6. Repeated exploitation enables sustained service disruption. Vulnerability confirmed actively exploited (CISA KEV). No public exploit identified at time of analysis. Adjacent network access required; attacker must be on same network segment as BGP peering.

Command injection in Juniper Networks Junos OS and Junos OS Evolved CLI processing allows high-privileged local attackers to execute arbitrary shell commands as root through crafted 'set system' arguments, enabling complete system compromise. Affects all versions before multiple fixed releases across both operating systems. Authentication required (high-privileged local access). No public exploit identified at time of analysis.

Denial of service in Juniper Networks Junos OS on SRX Series allows unauthenticated remote attackers to crash srxpfe process via malformed ICMPv6 packets during NAT64 translation. Repeated exploitation sustains DoS by forcing continuous process restarts. Affects wide range of Junos OS versions from 21.2 through 25.2 on SRX hardware. Vulnerability limited to ICMPv6 traffic; IPv4 and standard IPv6 cannot trigger. No public exploit identified at time of analysis.

Denial of service in Juniper Networks Junos OS chassis control daemon (chassisd) on SRX1500, SRX4100, SRX4200, and SRX4600 allows local attackers with low privileges to crash the daemon via a specific 'show chassis' CLI command, causing complete traffic disruption until modules restart. The vulnerability affects Junos OS versions 23.2 before 23.2R2-S6, 23.4 before 23.4R2-S7, 24.2 before 24.2R2-S2, 24.4 before 24.4R2, and 25.2 before 25.2R1-S1 or 25.2R2. No public exploit code or active exploitation has been identified at time of analysis.

Juniper Networks Junos OS on MX Series allows authenticated local users with low privileges to execute 'request csds' CLI commands intended only for high-privileged administrators or CSDS operators, enabling complete compromise of managed devices. The vulnerability affects Junos OS 24.4 releases before 24.4R2-S3 and 25.2 releases before 25.2R2. No public exploit code or active exploitation has been identified at time of analysis, though the CVSS score of 6.3 reflects moderate severity with high system impact.

Full device takeover in Juniper Networks Support Insights Virtual Lightweight Collector (vLWC) before 3.0.94 via hardcoded default credentials. The vLWC software ships with an unchangeable initial password for a high-privileged account with no enforced password change during provisioning, enabling unauthenticated remote attackers to gain complete system control. CVSS v4.0 score 9.3 (Critical). No public exploit identified at time of analysis.

Complete persistent denial of service in Juniper Networks Junos OS Evolved on PTX Series routers allows authenticated, low-privilege network attackers to crash the evo-aftmand service with no automatic recovery. The vulnerability triggers when PCEP-provisioned colored SRTE policy tunnels with 32-bit ASN values (greater than 65,535) in the Originator ASN field are monitored via gRPC, causing permanent forwarding plane failure until manual system restart. Affects multiple versions through 25.2 release train. No public exploit identified at time of analysis.

Packet buffer allocation failure in Juniper EX4000 and QFX5000 Series switches allows adjacent unauthenticated attackers to cause persistent Denial of Service requiring manual device restart. Attack vector requires specific configuration: device configured as service-provider edge with L2PT enabled on UNI and VSTP enabled on NNI in VXLAN scenarios. Receiving VSTP BPDUs on UNI triggers buffer exhaustion, halting all traffic forwarding. Affects Junos OS 24.4 through 24.4R1, 25.2 through 25.2R1. No public exploit identified at time of analysis.

Remote denial-of-service in Juniper Networks Junos OS (SRX/MX Series) allows unauthenticated attackers to crash IPsec daemons via malformed ISAKMP packets. Exploiting the improper input validation (CWE-1286) in kmd/iked IPsec library causes process restart, preventing new VPN security association establishment. Repeated attacks create sustained inability to establish VPN connections, severely degrading network connectivity for affected enterprise firewalls and routing platforms. No public exploit identified at time of analysis.

Missing authorization in Juniper Networks Junos OS and Junos OS Evolved CLI allows local users with low privileges to execute the 'show mgd' command with specific arguments to read sensitive information. The vulnerability affects multiple version branches of both Junos OS (22.4, 23.2, 23.4, 24.2, 24.4, 25.2) and Junos OS Evolved (23.2, 23.4, 24.2, 24.4, 25.2), with patches available for all affected versions. CVSS score is 6.8 with high confidentiality impact but no public exploit identified at time of analysis.

Firewall filter bypass in Juniper Networks Junos OS on MX Series allows unauthenticated network-based attackers to access the control plane by exploiting improper exception handling in the packet forwarding engine when firewall filters are applied to non-zero loopback interfaces in the default routing instance. Affected MX platforms with MPC10, MPC11, LC4800, LC9600 line cards and MX304 models running Junos OS versions before 23.2R2-S6, 23.4R2-S7, 24.2R2, or 24.4R2 fail to enforce configured lo0.n ingress filters, allowing bypass of access controls designed to protect critical infrastructure management interfaces. No public exploit identified at time of analysis, but the vulnerability requires only network access and no authentication to trigger.

Juniper Networks CTP OS 9.2R1 and 9.2R2 fail to persist password complexity settings, enabling unauthenticated attackers to exploit predictable weak passwords on local accounts. The password management function allows administrators to configure complexity requirements but does not save these configurations, verifiable through 'Show password requirements' menu. This defect permits trivial passwords that attackers can brute-force remotely to gain full device control. No public exploit identified at time of analysis.

Man-in-the-middle attack against Juniper Networks Apstra allows unauthenticated attackers to impersonate managed network devices and capture credentials due to insufficient SSH host key validation. The vulnerability affects all Apstra versions before 6.1.1, enabling interception of SSH connections between the Apstra orchestration platform and managed infrastructure. No public exploit identified at time of analysis, though the attack requires network positioning between Apstra and target devices.

Certificate chain validation bypass in Juniper Junos OS J-Web on SRX Series enables person-in-the-middle attackers to intercept Security Director cloud communications, exposing credentials and sensitive data. All SRX devices connecting to SD cloud fail to properly verify server certificates, allowing interception of authentication material and configuration data. Affects Junos OS versions across all branches prior to 22.4R3-S9, 23.2R2-S6, 23.4R2-S7, 24.2R2-S3, 24.4R2-S2, and 25.2R1-S2/25.2R2. No public exploit identified at time of analysis. Network-positioned attacker with high complexity required (CVSS AC:H).

Memory exhaustion in Juniper Networks Junos OS BroadBand Edge subscriber management daemon (bbe-smgd) on MX Series allows adjacent unauthenticated attackers to trigger persistent denial of service by sending authentication packets that do not match configured packet-type options. Each mismatched packet leaks memory, eventually consuming all available daemon heap memory and preventing new subscriber logins. Authentication packet-type configuration must be active for exploitation. No public exploit identified at time of analysis.

Memory leak in Juniper Networks Junos OS jdhcpd daemon enables adjacent unauthenticated attackers to crash DHCP services on MX Series routers. Each DHCPv6 subscriber logout in PPPoE or VLAN configurations with active/bulk lease query leaks memory, eventually exhausting resources and triggering jdhcpd crash. Service remains unavailable until process restart completes. Affects all Junos OS versions before 22.4R3-S1, 23.2 versions before 23.2R2, and 23.4 versions before 23.4R2. No public exploit identified at time of analysis.

Memory leak in Juniper Networks l2ald daemon allows adjacent attackers to crash Layer 2 services on EVPN-MPLS networks. Affects Junos OS and Junos OS Evolved across multiple versions. Unauthenticated attackers on the same network segment can trigger resource exhaustion by causing ESI route churn from multi-homed Provider Edge devices, forcing l2ald process crash and restart. No public exploit identified at time of analysis, but exploitation requires only network adjacency without authentication.

Packet forwarding engine (pfe) in Juniper Networks Junos OS on EX4100, EX4400, EX4650, and QFX5120 devices fails to correctly initialize egress filters on IRB and physical interfaces, allowing unauthenticated network-based attackers to bypass security policies and cause integrity impact by forwarding traffic that should be blocked. The vulnerability affects Junos OS versions 23.4R2-S6 and 24.2R2-S3. EPSS score of 6.9 reflects moderate exploitation probability; no active exploitation confirmed (non-KEV status).

Denial of service in Juniper Junos OS chassis control daemon (chassisd) on SRX1600, SRX2300, and SRX4300 devices allows local attackers with low privileges to trigger a complete crash via a specific 'show chassis' CLI command, causing temporary traffic disruption until module recovery. Junos OS 24.4 versions before 24.4R1-S3 and 24.4R2 are affected; no public exploit code identified at time of analysis.

Symbolic link manipulation in Juniper Networks Junos OS CLI enables authenticated local attackers with low privileges to escalate to root access. Exploitation requires two users: the first performs a 'file link ...' CLI operation, then after the second user commits unrelated configuration changes, the first user can authenticate as root, achieving full system compromise. Affects Junos OS versions across 23.2, 23.4, 24.2, 24.4, and 25.2 release trains prior to specified patch levels. No public exploit identified at time of analysis.

Local privilege escalation in Juniper Networks Junos OS Evolved on PTX Series routers allows authenticated users with low privileges to gain high-privileged direct access to Flexible PIC Concentrators (FPCs), enabling potential full compromise of affected line cards. Impacts PTX10004, PTX10008, PTX10016 with JNP10K-LC1201 or JNP10K-LC1202 line cards across multiple firmware branches. Missing authentication on critical FPC management functions permits unauthorized privilege elevation. No public exploit identified at time of analysis.

Management daemon deadlock in Juniper Networks Junos OS 23.4-24.4 and Junos OS Evolved enables network-based authenticated attackers to trigger complete management plane denial-of-service via rapid NETCONF session cycling. Vulnerability causes mgd processes to hang in lockf state, exhausting process pool and preventing administrative logins. Recovery requires device power-cycle. Affects deployments using NETCONF management interface with authenticated remote users. No public exploit identified at time of analysis.

Command injection in Juniper Networks Support Insights Virtual Lightweight Collector (JSI vLWC) CLI enables local high-privileged attackers to escalate privileges to root. Inadequate input validation in the CLI menu permits shell command injection, with injected commands executing at root level. All JSI vLWC versions before 3.0.94 affected. CVSS 8.4 (High severity, local vector). Requires high-level existing privileges (PR:H). No public exploit identified at time of analysis.

Stored cross-site scripting (XSS) in Juniper Networks Junos Space allows unauthenticated remote attackers to inject malicious script tags into the list filter field, which execute with the permissions of any user who views the affected page, including administrators. All versions before 24.1R5 Patch V3 are vulnerable. No public exploit code or active exploitation has been identified at time of analysis.

Unauthenticated buffer overflow in Juniper Networks Junos OS Evolved advanced forwarding toolkit (evo-aftmand/evo-pfemand) permits adjacent attackers to crash PTX Series and QFX5000 Series devices via crafted multicast packets. Exploitation triggers line card or device restart, sustaining denial of service under continuous attack. Affects multiple Junos OS Evolved release branches before patched versions. No public exploit identified at time of analysis. Attack requires adjacent network access but no authentication, making exploitation feasible in shared network segments.

Local privilege escalation in Juniper Networks Junos OS and Junos OS Evolved allows low-privileged authenticated users to execute arbitrary code with root privileges. When unsigned Python operation scripts are enabled in device configuration, attackers can inject and execute malicious op scripts under root-equivalent context, achieving complete system compromise. Affects all Junos OS versions before 22.4R3-S7 and multiple branches through 24.4, plus corresponding Junos OS Evolved releases. No public exploit identified at time of analysis. CVSS 8.5 (High) with local attack vector requiring low privileges and no user interaction.

Privilege escalation in Juniper Networks Junos OS allows high-privileged local attackers to gain root access on Linux-based line cards running Junos OS Evolved. Missing authentication in critical command processing functions enables authenticated administrators with elevated privileges to bypass access controls and execute commands as root on affected hardware modules including MPC7-11, LC2101/2103, LC480/4800/9600, MX304 built-in FPC, MX-SPC3, SRX5K-SPC3, EX9200-40XS, and PTX-series line cards. No public exploit identified at time of analysis.

Incorrect permission assignment on critical resources in Juniper Networks On-Box Anomaly detection framework. Allows unauthorized modification of anomaly detection configuration, potentially disabling security monitoring.

Authentication bypass in Juniper Networks Session Smart Router and Conductor allows network-based attackers to gain administrative control without credentials. The vulnerability affects multiple versions of the routing platform used in enterprise SD-WAN deployments.

Repeated telemetry collector subscriptions in Juniper Junos OS and Junos OS Evolved trigger a use-after-free vulnerability in the chassis daemon, allowing authenticated network attackers to crash critical processes and cause denial of service. Affected versions prior to 22.4R3-S8, 23.2R2-S5, and 23.4R2 are vulnerable when telemetry-capable daemons experience continuous sensor subscription cycles. No patch is currently available, leaving affected systems exposed until updates are released.

Denial-of-service attacks against Juniper SRX Series devices running Junos OS 23.4 through 24.4 can be triggered remotely by sending a maliciously crafted DNS request, causing the flowd process to crash and interrupt service until recovery completes. The vulnerability stems from an unchecked return value in the DNS module that allows unauthenticated, network-based attackers to exploit DNS-enabled SRX configurations without any user interaction. No patch is currently available for affected versions.

Juniper Networks Junos OS on SRX and MX Series is vulnerable to a double free condition in the flow processing daemon that an unauthenticated network attacker can trigger via a specific TCP packet sequence, causing the daemon to crash and the Fabric Routing Card to restart. This denial-of-service vulnerability affects all versions before 22.4R3-S7, 23.2 before 23.2R2-S3, 23.4 before 23.4R2-S4, and 24.2 before 24.2R2, with no patch currently available. An attacker on the network can exploit this vulnerability without authentication or user interaction to disrupt service availability.

Malformed SSL packets can trigger a Denial-of-Service condition in Juniper SRX devices running Junos OS with UTM Web-Filtering enabled, causing Forwarding Processor Card (FPC) crashes and restarts without requiring authentication. An unauthenticated network-based attacker can exploit this input validation flaw in the Web-Filtering module to disrupt device availability across affected Junos versions (23.2R2-S2 through 24.4R2). No patches are currently available for earlier Junos versions, and affected systems remain vulnerable until updates are applied.

Juniper SRX Series devices are vulnerable to denial-of-service attacks when processing malformed GTP Modify Bearer Request messages, which trigger an improper lock condition that freezes packet processing threads and causes watchdog timeouts. An unauthenticated network attacker can exploit this without user interaction to crash the forwarding processor and cause complete traffic outages requiring device restart. No patch is currently available for affected Junos OS versions.

Unauthenticated network-based attackers can cause a denial of service on Juniper EX4000-48T, EX4000-48P, and EX4000-48MP switches by sending high-volume traffic that crashes the FXPC component and forces a device restart. The vulnerability stems from improper resource initialization in the Internal Device Manager and results in complete service outage until automatic recovery completes. Affected versions include Junos OS 24.4 before 24.4R2 and 25.2 before 25.2R1, with no patch currently available.

A race condition in Juniper Junos OS on MX10k Series with LC480 or LC2101 line cards allows low-privileged local users to crash line card and potentially chassis daemons by repeatedly executing the 'show system firmware' command. Affected versions include all releases before 21.2R3-S10 and multiple later branches up to 23.2R, with no patch currently available. This denial of service vulnerability requires local access and can be triggered without elevated privileges.

MAC learning failures in Juniper Junos OS Evolved's Layer 2 Control Protocol Daemon can be triggered by a network-adjacent attacker who repeatedly toggles the management interface, causing label-switched interface MAC address learning to halt while generating excessive logs and consuming high CPU resources. This calculation error (CWE-682) affects availability through denial of service and currently has no available patch. The attack requires network adjacency but no authentication or user interaction.

EVPN-VXLAN traffic interruption in Juniper Junos on EX4k and QFX5k Series platforms allows adjacent network attackers to trigger interface link flaps that cause inter-VNI traffic to drop in configurations using Virtual Port-Link Aggregation Groups. An unauthenticated attacker can exploit this condition to deny service to VXLAN traffic between virtual network identifiers when multiple load-balanced next-hop routes exist for the same destination. No patch is currently available for this vulnerability.

Denial of service in Juniper Junos OS and Junos OS Evolved allows an adjacent IS-IS neighbor to trigger a memory leak in the routing protocol daemon by sending specially crafted update packets. Repeated exploitation exhausts available memory and crashes the rpd process, rendering routing unavailable. No patch is currently available.

Juniper Junos OS and Junos OS Evolved contain a use-after-free vulnerability in the 802.1X authentication daemon that allows authenticated, network-adjacent attackers to crash the process or achieve arbitrary code execution as root by triggering specific port state changes. Exploitation requires precise timing of a change-of-authorization event during port transitions, making reliable exploitation difficult but possible. Systems with 802.1X port-based network access control enabled are affected, and no patch is currently available.

Junos Space versions up to 24.1 is affected by use of a broken or risky cryptographic algorithm (CVSS 5.9).

Juniper Junos OS SRX Series suffers a denial of service vulnerability in the packet forwarding engine when PowerMode IPsec and GRE performance acceleration are both enabled, allowing remote attackers to crash the device by sending a specially crafted ICMP packet through a GRE tunnel. The crash results in immediate traffic loss and device restart, affecting systems with both features active on vulnerable SRX platforms. No patch is currently available.

Denial of service in Juniper Junos SIP application layer gateway allows unauthenticated remote attackers to crash critical processes by sending malformed SIP messages over TCP, affecting SRX Series and MX Series devices with specific service cards. The vulnerability exploits improper header parsing that triggers an infinite loop and watchdog timer expiration, disabling network traffic flow without requiring authentication or user interaction. No patch is currently available for this high-severity flaw.

Denial-of-service in Juniper Junos OS Packet Forwarding Engine allows authenticated attackers to crash Forwarding Processor Cards by subscribing to telemetry sensors at scale, forcing service restarts and network disruption. The vulnerability affects Junos versions before 22.4R3-S7, 23.2R2-S4, and 23.4R2, with no patch currently available. Installation of specific YANG sensor packages mitigates the issue.

Juniper Junos OS Forwarding Plane Crash (FPC) denial of service occurs when a network-adjacent attacker sends a specially crafted ICMPv4 packet with a malformed IP header, causing the affected line card to crash and restart. The attack is limited to directly adjacent networks since upstream routers filter such malformed packets before forwarding. No patch is currently available for this vulnerability affecting multiple Junos OS versions.

An Improper Check for Unusual or Exceptional Conditions vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated, network-based attacker to cause an availability impact for downstream devices. When an affected device receives a specific optional, transitive BGP attribute over an existing BGP session, it will be erroneously modified before propagation to peers. When the attribute is detected as malformed by the peers, these...

A NULL Pointer Dereference vulnerability in the chassis daemon (chassisd) of Juniper Networks Junos OS on MX, SRX and EX Series allows a local attacker with low privileges to cause a Denial-of-Service (DoS). [CVSS 5.5 MEDIUM]

A Buffer Over-read vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated, network-based attacker to cause a Denial-of-Service (DoS). [CVSS 7.5 HIGH]

An Incorrect Permission Assignment for Critical Resource vulnerability in the Juniper DHCP daemon (jdhcpd) of Juniper Networks Junos OS and Junos OS Evolved allows a local, low-privileged user to write to the Unix socket used to manage the jdhcpd process, resulting in complete control over the resource. This vulnerability allows any low-privileged user logged into the system to connect to the Unix socket and issue commands to manage the DHCP service, in essence, taking administrative control...

An Improper Check for Unusual or Exceptional Conditions vulnerability in the Juniper DHCP service (jdhcpd) of Juniper Networks Junos OS and Junos OS Evolved allows a DHCP client in one subnet to exhaust the address pools of other subnets, leading to a Denial of Service (DoS) on the downstream DHCP server. By default, the DHCP relay agent inserts its own Option 82 information when forwarding client requests, optionally replacing any Option 82 information provided by the client. When a speci...

An Untrusted Pointer Dereference vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows a local, authenticated attacker with low privileges to cause a Denial-of-Service (DoS). [CVSS 5.5 MEDIUM]

A clickjacking vulnerability exists in the web portal of Juniper Networks Paragon Automation (Pathfinder, Planner, Insights) due to the application's failure to set appropriate X-Frame-Options and X-Content-Type HTTP headers. [CVSS 6.1 MEDIUM]

An Incorrect Authorization vulnerability in the web server of Juniper Networks Junos OS on SRX Series allows an unauthenticated, network-based attacker to reach the Juniper Web Device Manager (J-Web). When Juniper Secure connect (JSC) is enabled on specific interfaces, or multiple interfaces are configured for J-Web, the J-Web UI is reachable over more than the intended interfaces. This issue affects Junos OS: * all versions before 21.4R3-S9, * 22.2 versions before 22.2R3-S5, * 22.4 versions before 22.4R3-S5, * 23.2 versions before 23.2R2-S3, * 23.4 versions before 23.4R2-S5, * 24.2 versions before 24.2R2.

A security vulnerability in the UI of Juniper Networks Junos OS and Junos OS Evolved allows a local (CVSS 5.1). Remediation should follow standard vulnerability management procedures.

An Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') vulnerability in the CLI of Juniper Networks Junos OS and Junos OS Evolved allows a high privileged, local attacker to escalated their privileges to root. When a user provides specifically crafted arguments to the 'request system logout' command, these will be executed as root on the shell, which can completely compromise the device. This issue affects: Junos OS:  * all versions before 21.2R3-S9, * 21.4 versions before 21.4R3-S8, * 22.2 versions before 22.2R3-S6, * 22.3 versions before 22.3R3-S3, * 22.4 versions before 22.4R3-S6, * 23.2 versions before 23.2R2-S1, * 23.4 versions before 23.4R1-S2, 23.4R2; Junos OS Evolved: * all versions before 22.4R3-S6-EVO, * 23.2-EVO versions before 23.2R2-S1-EVO, * 23.4-EVO versions before 23.4R1-S2-EVO, 23.4R2-EVO.

A Missing Release of Memory after Effective Lifetime vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows a local, low privileged user to cause an impact to the availability of the device. When RIB sharding is enabled and a user executes one of several routing related 'show' commands, a certain amount of memory is leaked. When all available memory has been consumed rpd will crash and restart. The leak can be monitored with the CLI command: show task memory detail | match task_shard_mgmt_cookie where the allocated memory in bytes can be seen to continuously increase with each exploitation. This issue affects: Junos OS: * all versions before 21.2R3-S9, * 21.4 versions before 21.4R3-S11, * 22.2 versions before 22.2R3-S7, * 22.4 versions before 22.4R3-S7, * 23.2 versions before 23.2R2-S4,  * 23.4 versions before 23.4R2-S4, * 24.2 versions before 24.2R2, * 24.4 versions before 24.4R1-S2, 24.4R2; Junos OS Evolved: * all versions before 22.2R3-S7-EVO * 22.4-EVO versions before 22.4R3-S7-EVO, * 23.2-EVO versions before 23.2R2-S4-EVO, * 23.4-EVO versions before 23.4R2-S4-EVO, * 24.2-EVO versions before 24.2R2-EVO,  * 24.4-EVO versions before 24.4R2-EVO.

CVE-2025-52985 is a security vulnerability (CVSS 5.3). Remediation should follow standard vulnerability management procedures.

A NULL Pointer Dereference vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated, network-based attacker to cause impact to the availability of the device. When static route points to a reject next hop and a gNMI query is processed for that static route, rpd crashes and restarts. This issue affects: Junos OS:  * all versions before 21.2R3-S9, * 21.4 versions before 21.4R3-S10,  * 22.2 versions before 22.2R3-S6, * 22.4 versions before 22.4R3-S6, * 23.2 versions before 23.2R2-S3, * 23.4 versions before 23.4R2-S4, * 24.2 versions before 24.2R1-S2, 24.2R2; Junos OS Evolved: * all versions before 22.4R3-S7-EVO, * 23.2-EVO versions before 23.2R2-S3-EVO, * 23.4-EVO versions before 23.4R2-S4-EVO, * 24.2-EVO versions before 24.2R2-EVO.

CVE-2025-52983 is a critical authentication bypass vulnerability in Juniper Networks Junos OS on VM Host Routing Engines where public keys configured for root access are not properly validated, allowing users possessing the corresponding private key to gain unauthorized root-level access even after the public key has been administratively removed from the system. This network-accessible vulnerability affects multiple Junos OS release branches and requires high privileges to configure but enables complete system compromise once exploited. While the CVSS score of 7.2 reflects significant impact, the practical risk depends on KEV designation and active exploitation status.

An Improper Resource Shutdown or Release vulnerability in the SIP ALG of Juniper Networks Junos OS on MX Series with MS-MPC allows an unauthenticated, network-based attacker to cause a Denial-of-Service (DoS). When an MX Series device with an MS-MPC is configured with two or more service sets which are both processing SIP calls, a specific sequence of call events will lead to a crash and restart of the MS-MPC. This issue affects Junos OS: * all versions before 21.2R3-S9, * 21.4 versions from 21.4R1, * 22.2 versions before 22.2R3-S6, * 22.4 versions before 22.4R3-S6. As the MS-MPC is EoL after Junos OS 22.4, later versions are not affected. This issue does not affect MX-SPC3 or SRX Series devices.

A denial of service vulnerability (CVSS 7.5). High severity vulnerability requiring prompt remediation.

A denial of service vulnerability (CVSS 7.5). High severity vulnerability requiring prompt remediation.

A Reachable Assertion vulnerability in the Routing Protocol Daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated, network-based attacker to cause a Denial of Service (DoS). When the device receives a specific BGP UPDATE packet, the rpd crashes and restarts. Continuous receipt of this specific packet will cause a sustained DoS condition. For the issue to occur, BGP multipath with "pause-computation-during-churn" must be configured on the device, and the attacker must send the paths via a BGP UPDATE from a established BGP peer. This issue affects: Junos OS: * All versions before 21.4R3-S7, * from 22.3 before 22.3R3-S3, * from 22.4 before 22.4R3-S5, * from 23.2 before 23.2R2, * from 23.4 before 23.4R2. Junos OS Evolved: * All versions before 21.4R3-S7-EVO, * from 22.3 before 22.3R3-S3-EVO, * from 22.4 before 22.4R3-S5-EVO, * from 23.2 before 23.2R2-EVO, * from 23.4 before 23.4R2-EVO.

An Improper Access Control vulnerability in the User Interface (UI) of Juniper Networks Junos OS allows a local, low-privileged attacker to bring down an interface, leading to a Denial-of-Service. Users with "view" permissions can run a specific request interface command which allows the user to shut down the interface. This issue affects Junos OS:  * All versions before 21.2R3-S9, * from 21.4 before 21.4R3-S11, * from 22.2 before 22.2R3-S7, * from 22.4 before 22.4R3-S7, * from 23.2 before 23.2R2-S4, * from 23.4 before 23.4R2-S5,   * from 24.2 before 24.2R2-S1, * from 24.4 before 24.4R1-S3, 24.4R2.

A Reachable Assertion vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an adjacent, unauthenticated attacker to cause a Denial of Service (DoS).On all Junos OS and Junos OS Evolved devices, when route validation is enabled, a rare condition during BGP initial session establishment can lead to an rpd crash and restart. This occurs specifically when the connection request fails during error-handling scenario. Continued session establishment failures leads to a sustained DoS condition.  This issue affects Junos OS: * All versions before 22.2R3-S6, * from 22.4 before 22.4R3-S6, * from 23.2 before 23.2R2-S3, * from 23.4 before 23.4R2-S4, * from 24.2 before 24.2R2; Junos OS Evolved: * All versions before 22.2R3-S6-EVO, * from 22.4 before 22.4R3-S6-EVO, * from 23.2 before 23.2R2-S3-EVO, * from 23.4 before 23.4R2-S4-EVO, * from 24.2 before 24.2R2-EVO.

An Incorrect Calculation of Buffer Size vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an adjacent unauthenticated attacker to cause a memory corruption that leads to a rpd crash.  When the logical interface using a routing instance flaps continuously, specific updates are sent to the jflow/sflow modules. This results in memory corruption, leading to an rpd crash and restart.  Continued receipt of these specific updates will cause a sustained Denial of Service condition. This issue affects Junos OS: * All versions before 21.2R3-S9, * All versions of 21.4, * All versions of 22.2, * from 22.4 before 22.4R3-S7, * from 23.2 before 23.2R2-S3, * from 23.4 before 23.4R2-S4, * from 24.2 before 24.2R2. Junos OS Evolved:  * All versions of 21.2-EVO,  * All versions of 21.4-EVO,  * All versions of 22.2-EVO,  * from 22.4 before 22.4R3-S7-EVO,  * from 23.2 before 23.2R2-S3-EVO,  * from 23.4 before 23.4R2-S4-EVO,  * from 24.2 before 24.2R2-EVO.

A command injection vulnerability (CVSS 7.8). High severity vulnerability requiring prompt remediation.

An Expected Behavior Violation vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated adjacent attacker sending a valid BGP UPDATE packet to cause a BGP session reset, resulting in a Denial of Service (DoS).  Continuous receipt and processing of this packet will create a sustained Denial of Service (DoS) condition. This issue affects iBGP and eBGP and both IPv4 and IPv6 are affected by this vulnerability. This issue affects Junos OS: * All versions before 21.2R3-S9, * from 21.4 before 21.4R3-S11, * from 22.2 before 22.2R3-S7, * from 22.4 before 22.4R3-S7, * from 23.2 before 23.2R2-S4, * from 23.4 before 23.4R2-S4, * from 24.2 before 24.2R2, * from 24.4 before 24.4R1-S3, 24.4R2 Junos OS Evolved: * All versions before 22.2R3-S7-EVO, * from 22.4-EVO before 22.4R3-S7-EVO, * from 23.2-EVO before 23.2R2-S4-EVO, * from 23.4-EVO before 23.4R2-S4-EVO, * from 24.2-EVO before 24.2R2-EVO, * from 24.4-EVO before 24.4R1-S3-EVO, 24.4R2-EVO.

An Out-of-bounds Write vulnerability in the connectivity fault management (CFM) daemon of Juniper Networks Junos OS on MX Series with MPC-BUILTIN, MPC1 through MPC9 line cards allows an unauthenticated adjacent attacker to send a malformed packet to the device, leading to an FPC crash and restart, resulting in a Denial of Service (DoS). Continued receipt and processing of this packet will create a sustained Denial of Service (DoS) condition. This issue affects Juniper Networks: Junos OS: * All versions before 22.2R3-S1, * from 22.4 before 22.4R2. This feature is not enabled by default.

A Protection Mechanism Failure vulnerability in kernel filter processing of Juniper Networks Junos OS allows an attacker sending IPv6 traffic destined to the device to effectively bypass any firewall filtering configured on the interface. Due to an issue with Junos OS kernel filter processing, the 'payload-protocol' match is not being supported, causing any term containing it to accept all packets without taking any other action. In essence, these firewall filter terms were being processed as an 'accept' for all traffic on the interface destined for the control plane, even when used in combination with other match criteria. This issue only affects firewall filters protecting the device's control plane. Transit firewall filtering is unaffected by this vulnerability. This issue affects Junos OS:  * all versions before 21.2R3-S9,  * from 21.4 before 21.4R3-S11,  * from 22.2 before 22.2R3-S7,  * from 22.4 before 22.4R3-S7,  * from 23.2 before 23.2R2-S4,  * from 23.4 before 23.4R2-S5,  * from 24.2 before 24.2R2-S1,  * from 24.4 before 24.4R1-S2, 24.4R2. This is a more complete fix for previously published CVE-2024-21607 (JSA75748).

CVE-2025-52950 is a Missing Authorization vulnerability in Juniper Networks Security Director that allows authenticated attackers to read and modify sensitive resources beyond their authorization level through the web interface. This affects Security Director version 24.4.1 and could enable lateral movement and compromise of downstream managed network devices. The vulnerability has a critical CVSS 9.6 score and represents a significant integrity and availability risk, though it requires valid credentials to exploit.

An Improper Handling of Length Parameter Inconsistency vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows a logically adjacent BGP peer sending a specifically malformed BGP packet to cause rpd to crash and restart, resulting in a Denial of Service (DoS). Continued receipt and processing of this packet will create a sustained Denial of Service (DoS) condition. Only systems configured for Ethernet Virtual Private Networking (EVPN) signaling are vulnerable to this issue.  This issue affects iBGP and eBGP, and both IPv4 and IPv6 are affected by this vulnerability.This issue affects: Junos OS:  * all versions before 21.4R3-S11,  * from 22.2 before 22.2R3-S7,  * from 22.4 before 22.4R3-S7,  * from 23.2 before 23.2R2-S4,  * from 23.4 before 23.4R2-S5,  * from 24.2 before 24.2R2-S1,  * from 24.4 before 24.4R1-S3, 24.4R2;  Junos OS Evolved:  * all versions before 22.2R3-S7-EVO,  * from 22.4-EVO before 22.4R3-S7-EVO,  * from 23.2-EVO before 23.2R2-S4-EVO,  * from 23.4-EVO before 23.4R2-S5-EVO,  * from 24.2-EVO before 24.2R2-S1-EVO,  * from 24.4-EVO before 24.4R1-S3-EVO, 24.4R2-EVO.

An Improper Handling of Exceptional Conditions vulnerability in Berkeley Packet Filter (BPF) processing of Juniper Networks Junos OS allows an attacker, in rare cases, sending specific, unknown traffic patterns to cause the FPC and system to crash and restart. BPF provides a raw interface to data link layers in a protocol independent fashion. Internally within the Junos kernel, due to a rare timing issue (race condition), when a BPF instance is cloned, the newly created interface causes an internal structure leakage, leading to a system crash. The precise content and timing of the traffic patterns is indeterminate, but has been seen in a lab environment multiple times. This issue is more likely to occur when packet capturing is enabled.  See required configuration below. This issue affects Junos OS:  * all versions before 21.2R3-S9,  * from 21.4 before 21.4R3-S10,  * from 22.2 before 22.2R3-S6,  * from 22.4 before 22.4R3-S7,  * from 23.2 before 23.2R2-S3,  * from 23.4 before 23.4R2-S3,  * from 24.2 before 24.2R1-S1, 24.2R2.

An Improper Handling of Exceptional Conditions vulnerability in route processing of Juniper Networks Junos OS on specific end-of-life (EOL) ACX Series platforms allows an attacker to crash the Forwarding Engine Board (FEB) by flapping an interface, leading to a Denial of Service (DoS). On ACX1000, ACX1100, ACX2000, ACX2100, ACX2200, ACX4000, ACX5048, and ACX5096 devices, FEB0 will crash when the primary path port of the L2 circuit IGP (Interior Gateway Protocol) on the local device goes down. This issue is seen only when 'hot-standby' mode is configured for the L2 circuit. This issue affects Junos OS on ACX1000, ACX1100, ACX2000, ACX2100, ACX2200, ACX4000, ACX5048, and ACX5096:  * all versions before 21.2R3-S9.

A denial of service vulnerability (CVSS 7.5) that allows an attacker sending a bgp update with a specifically malformed as path. High severity vulnerability requiring prompt remediation.

A remote code execution vulnerability in line card script processing of Juniper Networks Junos OS allows a local (CVSS 7.3). High severity vulnerability requiring prompt remediation.

An Improper Check for Unusual or Exceptional Conditions vulnerability in the Packet Forwarding Engine (pfe) of Juniper Networks Junos OS on MX Series allows an unauthenticated, network-based attacker. Rated high severity (CVSS 8.7), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

An Improper Handling of Length Parameter Inconsistency vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS on SRX Series allows an unauthenticated, network-based attacker. Rated high severity (CVSS 8.7), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

A Missing Release of Memory after Effective Lifetime vulnerability in the Anti-Virus processing of Juniper Networks Junos OS on SRX Series allows an unauthenticated, network-based attacker to cause a. Rated high severity (CVSS 8.7), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

An Improper Encoding or Escaping of Output vulnerability in the Sampling Route Record Daemon (SRRD) of Juniper Networks Junos OS allows an unauthenticated, network-based attacker to cause a. Rated medium severity (CVSS 6.9), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

An Improper Handling of Additional Special Element vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS on MX Series with MS-MPC, MS-MIC and SPC3, and SRX Series, allows. Rated high severity (CVSS 8.7), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

An Improper Check for Unusual or Exceptional Conditions vulnerability in the Routing Protocol Daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows a local, low-privileged attacker to. Rated medium severity (CVSS 6.8), this vulnerability is low attack complexity. No vendor patch available.

An Exposure of Sensitive Information to an Unauthorized Actor vulnerability in the User Interface (UI) of Juniper Networks Junos OS and Junos OS Evolved allows a local, low-privileged, authenticated. Rated medium severity (CVSS 6.8), this vulnerability is low attack complexity. No vendor patch available.

An Expired Pointer Dereference vulnerability in Routing Protocol Daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated, adjacent attacker to cause Denial of Service. Rated medium severity (CVSS 6.0), this vulnerability is no authentication required, low attack complexity. No vendor patch available.

An Improper Handling of Exceptional Conditions vulnerability in routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows a local, low-privileged attacker executing a CLI. Rated medium severity (CVSS 6.8), this vulnerability is low attack complexity. No vendor patch available.

A Buffer Access with Incorrect Length Value vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated, network-based attacker to. Rated high severity (CVSS 8.7), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

An Improper Input Validation vulnerability in the syslog stream TCP transport of Juniper Networks Junos OS on MX240, MX480 and MX960 devices with MX-SPC3 Security Services Card allows an. Rated high severity (CVSS 8.7), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

An Improper Input Validation vulnerability in the Juniper DHCP Daemon (jdhcpd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated, adjacent attacker to cause the jdhcpd. Rated high severity (CVSS 7.1), this vulnerability is no authentication required, low attack complexity. No vendor patch available.

A Missing Release of Memory after Effective Lifetime vulnerability in the packet forwarding engine (PFE) of Juniper Networks Junos OS on MX Series allows an unauthenticated adjacent attacker to cause. Rated high severity (CVSS 7.1), this vulnerability is no authentication required, low attack complexity. No vendor patch available.

A Signed to Unsigned Conversion Error vulnerability in the Layer 2 Control Protocol daemon (l2cpd) of Juniper Networks Junos OS and Juniper Networks Junos OS Evolved allows an unauthenticated. Rated high severity (CVSS 7.1), this vulnerability is no authentication required, low attack complexity. No vendor patch available.