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NGINX Plus CVE-2026-60065

| EUVDEUVD-2026-44685 MEDIUM
Out-of-bounds Read (CWE-125)
2026-07-15 f5 GHSA-w94h-5qpm-994v
6.3
CVSS 4.0 · Vendor: f5
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Severity by source

Vendor (f5) PRIMARY
6.3 LOW
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
vuln.today AI
3.7 LOW

Network-reachable with no auth needed, but AC:H reflects AT:P partial-control constraint; availability-only low impact from worker restart, no scope change.

3.1 AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
4.0 AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
SUSE
3.7 LOW
AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L

Primary rating from Vendor (f5).

CVSS VectorVendor: f5

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
X

Lifecycle Timeline

4
Analysis Generated
Jul 15, 2026 - 15:33 vuln.today
Severity Changed
Jul 15, 2026 - 15:22 NVD
LOW MEDIUM
CVSS changed
Jul 15, 2026 - 15:22 NVD
3.7 (LOW) 6.3 (MEDIUM)
CVE Published
Jul 15, 2026 - 14:33 cve.org
MEDIUM 6.3

DescriptionCVE.org

When NGINX Plus is configured to use the Message Queuing Telemetry Transport (MQTT) filter module (ngx_stream_mqtt_filter_module), unauthenticated attackers can send requests with conditions beyond the attacker's control to cause a heap buffer over-read in the NGINX worker process, leading to a restart.

Impact: This vulnerability may allow remote unauthenticated attackers to have limited control to restart the NGINX worker process. There is no control plane exposure; this is a data plane issue only.

Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

AnalysisAI

Heap buffer over-read in NGINX Plus's MQTT filter module (ngx_stream_mqtt_filter_module) allows unauthenticated remote attackers to crash the NGINX worker process, causing a brief, recoverable service disruption. The vulnerability is data-plane only - no control plane exposure exists - and exploitation depends partly on runtime conditions outside the attacker's control, reflected by the CVSS 4.0 AT:P metric. No public exploit code or active exploitation (CISA KEV) has been identified at time of analysis; F5 has released a patch documented in advisory K000162101.

Technical ContextAI

NGINX Plus (CPE: cpe:2.3:a:f5:nginx_plus:*:*:*:*:*:*:*:*) is F5's commercially supported, feature-extended variant of the open-source NGINX server. The vulnerable component is the optional ngx_stream_mqtt_filter_module, which operates at the stream layer to parse Message Queuing Telemetry Transport (MQTT) protocol traffic - a lightweight pub/sub messaging protocol common in IoT and telemetry pipelines. CWE-125 (Out-of-bounds Read) identifies the root cause class: the module reads beyond the allocated heap buffer boundary when processing certain MQTT client messages, triggering a segmentation fault in the NGINX worker process. Because NGINX Plus uses a master/worker process model, the master process automatically respawns crashed workers, which limits - but does not eliminate - service disruption during the crash interval.

RemediationAI

Apply the vendor-released patch by upgrading to the fixed NGINX Plus version specified in F5 advisory K000162101 (https://my.f5.com/manage/s/article/K000162101); the advisory provides exact version targets and upgrade procedures. As an immediate workaround where patching is not yet feasible, organizations that do not require MQTT proxying should remove or comment out the ngx_stream_mqtt_filter_module load directive and any related stream configuration blocks - this eliminates the attack surface entirely with no impact to non-MQTT workloads. For deployments where MQTT functionality is operationally required prior to patching, restrict network access to the MQTT stream listener port via upstream firewall ACLs or host-based packet filtering to limit exposure to known, trusted MQTT client addresses; note this reduces but does not eliminate risk from compromised trusted hosts. Confirm that the NGINX Plus master process watchdog is active and correctly configured to auto-respawn worker processes, which minimizes downtime duration if exploitation is attempted before patching.

CVE-2023-44487 HIGH POC
7.5 Oct 10

Denial of service against HTTP/2 server implementations allows remote unauthenticated attackers to exhaust server resour

CVE-2026-42945 CRITICAL POC
9.2 May 13

Heap buffer overflow in NGINX Plus and NGINX Open Source ngx_http_rewrite_module allows remote attackers to crash worker

CVE-2026-42055 CRITICAL POC
9.2 Jun 17

Heap-based buffer overflow in NGINX Plus and NGINX Open Source affects deployments that proxy HTTP/2 or gRPC traffic ups

CVE-2026-9256 CRITICAL POC
9.2 May 22

Heap buffer overflow in NGINX Plus and NGINX Open Source ngx_http_rewrite_module can be triggered by unauthenticated rem

CVE-2026-42533 CRITICAL POC
9.2 Jul 15

Heap buffer overflow in NGINX Plus and NGINX Open Source lets unauthenticated remote attackers crash worker processes (D

CVE-2026-60005 HIGH
8.8 Jul 15

Limited memory disclosure and worker-process restart in NGINX Plus and NGINX Open Source arise when the optional ngx_htt

CVE-2026-27654 HIGH POC
8.8 Mar 24

Buffer overflow in NGINX's DAV module allows remote attackers to crash worker processes or manipulate file names outside

CVE-2026-27651 HIGH
8.7 Mar 24

NGINX worker process crashes via null pointer dereference in the mail authentication module when CRAM-MD5 or APOP authen

CVE-2024-39792 HIGH
8.7 Aug 14

When the NGINX Plus is configured to use the MQTT pre-read module, undisclosed requests can cause an increase in memory

CVE-2026-32647 HIGH
8.5 Mar 24

NGINX Open Source and NGINX Plus contain a buffer over-read or over-write vulnerability in the ngx_http_mp4_module that

CVE-2026-56434 HIGH
8.3 Jul 15

Heap buffer over-read in the ngx_http_ssi_module of NGINX Open Source and NGINX Plus lets an unauthenticated man-in-the-

CVE-2026-42946 HIGH
8.3 May 13

Memory disclosure and denial-of-service in NGINX's SCGI and uWSGI proxy modules allow attackers with man-in-the-middle p

Vendor StatusVendor

SUSE

Severity: Low
Product Status
SUSE Linux Enterprise High Performance Computing 15 SP7 Affected
SUSE Linux Enterprise Module for Server Applications 15 SP7 Affected
SUSE Linux Enterprise Server 15 SP7 Affected
SUSE Linux Enterprise Server 16.1 Affected
SUSE Linux Enterprise Server for SAP Applications 15 SP7 Affected

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CVE-2026-60065 vulnerability details – vuln.today

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