SB2026092334 - Remote code execution in F5 BIG-IP APM

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Main Vulnerability Database SB2026092334

SB2026092334 - Remote code execution in F5 BIG-IP APM

Published: September 23, 2026

Security Bulletin ID SB2026092334
CSH Severity
Critical
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

Critical 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Heap-based buffer overflow (CVE-ID: CVE-2026-94127) Exploited

CWE-ID: CWE-122 - Heap-based Buffer Overflow

CVSSv4: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to execute arbitrary code.

The vulnerability exists due to a heap-based buffer overflow in APM OAuth when processing malicious traffic. A remote attacker can send malicious traffic to execute arbitrary code.

Only deployments configured as an OAuth Authorization Server are affected; deployments used strictly as an OAuth Client or Resource Server are not affected.

Note, the vulnerability is being actively exploited in the wild.


Remediation

Install update from vendor's website.

References