Sonicos

Stack-based buffer overflow in SonicWall SonicOS enables authenticated remote attackers with high-privilege credentials to crash the firewall, producing a complete denial-of-service condition across multiple SonicOS release trains. Affected deployments span SonicOS 6.5.x, 7.0.x, 7.3.x, and 8.1.x builds per ENISA EUVD-2026-26256 and SonicWall advisory SNWLID-2026-0004. No public exploit code has been identified and CISA SSVC classifies exploitation as none, placing this at lower operational priority despite the network-accessible attack vector.

Path traversal in SonicWall SonicOS enables authenticated attackers on adjacent networks to access services that are normally restricted to privileged system internals. Affecting multiple SonicOS branches (6.x, 7.0.x, 7.3.x, 8.x), successful exploitation can result in high availability impact alongside limited confidentiality and integrity gains, per the CVSS impact metrics. No public exploit code has been identified and CISA SSVC confirms exploitation status as none, with EPSS at 0.01% (2nd percentile), indicating negligible in-the-wild exploitation pressure at time of analysis.

Improper access control in SonicWall SonicOS lets an adjacent-network attacker reach certain management interface functions that should be restricted, exposing sensitive information (tagged Information Disclosure) with high confidentiality, integrity, and availability impact per CVSS 8.0. The flaw is vendor-reported by SonicWall PSIRT (SNWLID-2026-0004) and affects the firewall/appliance operating system across the 6.5.5.x, 7.0.x, 7.3.x, and 8.1.x branches. There is no public exploit identified at time of analysis, and EPSS is negligible (0.01%).

Authenticated users can trigger a stack-based buffer overflow in SonicOS certificate handling to cause denial of service against Sonicos firewalls. The vulnerability requires administrative privileges to exploit and results in firewall crashes rather than code execution. No patch is currently available.

SonicOS firewalls are vulnerable to a post-authentication out-of-bounds read that permits authenticated remote attackers to trigger a denial-of-service condition by crashing the device. The medium-severity vulnerability requires high-level privileges and has no available patch, leaving affected deployments potentially exposed until remediation is released.

SonicOS firewalls are vulnerable to denial-of-service attacks when an authenticated remote attacker triggers a null pointer dereference, causing the device to crash. This post-authentication flaw affects firewall availability but requires valid credentials to exploit. No patch is currently available.

SonicOS firewalls are vulnerable to a post-authentication format string vulnerability that permits authenticated remote attackers to trigger a denial of service condition and crash the affected device. The attack requires valid credentials but can be executed over the network without user interaction. No patch is currently available for this vulnerability.

SonicOS management interface suffers from stack-based buffer overflow flaws in an API endpoint that allow authenticated administrators to trigger denial of service conditions through improper input validation. The vulnerability affects Stack Overflow and Sonicos products but currently lacks an available patch, leaving deployed systems exposed to authenticated attack vectors with no mitigation path.

A Stack-based buffer overflow vulnerability in the SonicOS SSLVPN service allows a remote unauthenticated attacker to cause Denial of Service (DoS), which could cause an impacted firewall to crash. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

SonicWall SonicOS SSLVPN contains an authentication bypass vulnerability allowing remote attackers to bypass authentication mechanisms and gain unauthorized VPN access to protected networks.

An improper access control vulnerability has been identified in the SonicWall SonicOS management access, potentially leading to unauthorized resource access and in specific conditions, causing the. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Heap-based buffer overflow vulnerability in the SonicOS IPSec VPN allows an unauthenticated remote attacker to cause Denial of Service (DoS). Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

RADIUS Protocol under RFC 2865 is susceptible to forgery attacks by a local attacker who can modify any valid Response (Access-Accept, Access-Reject, or Access-Challenge) to any other response using. Rated critical severity (CVSS 9.0), this vulnerability is remotely exploitable, no authentication required. Epss exploitation probability 19.0% and no vendor patch available.

Heap-based buffer overflow vulnerability in the SonicOS SSL-VPN allows an authenticated remote attacker to cause Denial of Service (DoS) via memcpy function. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.

Stack-based buffer overflow vulnerability in the SonicOS HTTP server allows an authenticated remote attacker to cause Denial of Service (DoS) via sscanf function. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

An improper authentication vulnerability has been identified in SonicWall SonicOS SSL-VPN feature, which in specific conditions could allow a remote attacker to bypass authentication.1.1-7040. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

SonicOS post-authentication Improper Privilege Management vulnerability in the SonicOS SSL VPN Tunnel allows users to elevate their privileges inside the tunnel. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.

SonicOS Use of Hard-coded Password vulnerability in the 'dynHandleBuyToolbar' demo function. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

SonicOS post-authentication Stack-Based Buffer Overflow Vulnerability in the SSL VPN plainprefs.exp URL endpoint leads to a firewall crash. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.

SonicOS post-authentication Stack-Based Buffer Overflow Vulnerability in the sonicwall.exp, prefs.exp URL endpoints lead to a firewall crash. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.

SonicOS p ost-authentication Stack-Based Buffer Overflow vulnerability in the ssoStats-s.xml, ssoStats-s.wri URL endpoints leads to a firewall crash. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.

SonicOS post-authentication Stack-Based Buffer Overflow vulnerability in the getPacketReplayData.json URL endpoint leads to a firewall crash. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.

SonicOS post-authentication user assertion failure leads to Stack-Based Buffer Overflow vulnerability via main.cgi leads to a firewall crash. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.

SonicOS post-authentication stack-based buffer overflow vulnerability in the sonicflow.csv and appflowsessions.csv URL endpoints leads to a firewall crash. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.

SonicOS post-authentication stack-based buffer overflow vulnerability in the getBookmarkList.json URL endpoint leads to a firewall crash. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.

SonicOS SSLVPN improper restriction of excessive MFA attempts vulnerability allows an authenticated attacker to use excessive MFA codes. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.

A Stack-based buffer overflow vulnerability in the SonicOS allows a remote unauthenticated attacker to cause Denial of Service (DoS), which could cause an impacted firewall to crash. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Improper Restriction of TCP Communication Channel in HTTP/S inbound traffic from WAN to DMZ bypassing security policy until TCP handshake potentially resulting in Denial of Service (DoS) attack if a. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

A Stack-based buffer overflow vulnerability in the SonicOS via HTTP request allows a remote unauthenticated attacker to cause Denial of Service (DoS) or potentially results in code execution in the. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

A Host Header Redirection vulnerability in SonicOS potentially allows a remote attacker to redirect firewall management users to arbitrary web domains. Rated medium severity (CVSS 6.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.

A vulnerability in SonicOS where the HTTP server response leaks partial memory by sending a crafted HTTP request, this can potentially lead to an internal sensitive data disclosure vulnerability. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

A buffer overflow vulnerability in SonicOS allows a remote attacker to cause a Denial of Service (DoS) by sending a specially crafted request. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

The X509_V_FLAG_X509_STRICT flag enables additional security checks of the certificates present in a certificate chain. Rated high severity (CVSS 7.4), this vulnerability is remotely exploitable, no authentication required.

An OpenSSL TLS server may crash if sent a maliciously crafted renegotiation ClientHello message from a client. Rated medium severity (CVSS 5.9), this vulnerability is remotely exploitable, no authentication required. This NULL Pointer Dereference vulnerability could allow attackers to crash the application by dereferencing a null pointer.

SonicOS SSLVPN login page allows a remote unauthenticated attacker to perform firewall management administrator username enumeration based on the server responses. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

A stored cross-site scripting (XSS) vulnerability exists in the SonicOS SSLVPN web interface. Rated medium severity (CVSS 6.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

A vulnerability in SonicOS allows a remote unauthenticated attacker to brute force Virtual Assist ticket ID in the firewall SSLVPN service. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

A vulnerability in SonicOS allows a remote unauthenticated attacker to cause Denial of Service (DoS) on the firewall SSLVPN service by sending a malicious HTTP request that leads to memory addresses. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

A vulnerability in SonicOS SSLVPN service allows a remote unauthenticated attacker to cause Denial of Service (DoS) due to the release of Invalid pointer and leads to a firewall crash. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

A Heap Overflow vulnerability in the SonicOS allows a remote unauthenticated attacker to cause Denial of Service (DoS) on the firewall SSLVPN service and leads to SonicOS crash. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

A buffer overflow vulnerability in SonicOS allows a remote unauthenticated attacker to cause Denial of Service (DoS) on the firewall SSLVPN service and leads to firewall crash. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

A buffer overflow vulnerability in SonicOS allows an authenticated attacker to cause Denial of Service (DoS) in the SSL-VPN and virtual assist portal, which leads to a firewall crash. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.

A buffer overflow vulnerability in SonicOS allows a remote attacker to cause Denial of Service (DoS) and potentially execute arbitrary code by sending a malicious request to the firewall. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

A vulnerability in SonicOS allows an authenticated attacker to cause out-of-bound invalid file reference leads to a firewall crash. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.

A vulnerability in SonicOS allows a remote unauthenticated attacker to cause Denial of Service due to buffer overflow, which leads to a firewall crash. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

SonicWall SSL-VPN products and SonicWall firewall SSL-VPN feature misconfiguration leads to possible DNS flaw known as domain name collision vulnerability. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

SonicOS SSLVPN LDAP login request allows remote attackers to cause external service interaction (DNS) due to improper validation of the request. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

A vulnerability in SonicOS allow authenticated read-only admin can elevate permissions to configuration mode. Rated high severity (CVSS 7.2), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.

Installation of the SonicOS SSLVPN NACagent 3.5 on the Windows operating system, an autorun value is created does not put the path in quotes, so if a malicious binary by an attacker within the parent. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. No vendor patch available.

Wind River VxWorks 6.7 though 6.9 and vx7 has a Buffer Overflow in the TCP component (issue 3 of 4). Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Wind River VxWorks 6.9 and vx7 has a Buffer Overflow in the TCP component (issue 2 of 4). Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Wind River VxWorks 6.6 through vx7 has Session Fixation in the TCP component. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.

Wind River VxWorks has a Buffer Overflow in the TCP component (issue 1 of 4). Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.

Wind River VxWorks 6.5, 6.6, 6.7, 6.8, 6.9.3 and 6.9.4 has a Memory Leak in the IGMPv3 client component. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Wind River VxWorks 6.9.4 and vx7 has a Buffer Overflow in the TCP component (issue 4 of 4). Rated high severity (CVSS 8.1), this vulnerability is remotely exploitable, no authentication required. No vendor patch available.

Wind River VxWorks 6.6, 6.7, 6.8, 6.9 and vx7 has an array index error in the IGMPv3 client component. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Wind River VxWorks 6.6 through 6.9 has a Buffer Overflow in the DHCP client component. Rated high severity (CVSS 8.8), this vulnerability is no authentication required, low attack complexity. No vendor patch available.

Wind River VxWorks 6.9 and vx7 has a Buffer Overflow in the IPv4 component. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

A vulnerability in SonicWall SonicOS and SonicOSv TLS CBC Cipher allow remote attackers to obtain sensitive plaintext data when CBC cipher suites are enabled. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

A vulnerability in SonicWall SonicOS and SonicOSv with management enabled system on specific configuration allow unprivileged user to access advanced routing services. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

A vulnerability in SonicWall SonicOS and SonicOSv, allow authenticated read-only admin to leave the firewall in an unstable state by downloading certificate with specific extension. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.

SonicWall SonicOS on Network Security Appliance (NSA) 2017 Q4 devices has XSS via the CFS Custom Category and Cloud AV DB Exclusion Settings screens. Rated medium severity (CVSS 5.4), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and no vendor patch available.

SonicWall SonicOS on Network Security Appliance (NSA) 2016 Q4 devices has XSS via the Configure SSO screens. Rated medium severity (CVSS 5.4), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and no vendor patch available.

Multiple cross-site scripting (XSS) vulnerabilities in macIpSpoofView.html in Dell SonicWall SonicOS 7.5.0.12 and 6.x allow remote attackers to inject arbitrary web script or HTML via the (1). Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable. Public exploit code available and no vendor patch available.