🛡️ CVE-2026-42919 — big-ip-access-policy-manager

🟡 CVSS 6.7 — Medium ✅ No Known Exploit CWE-121 NVD
6.7
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

A vulnerability exists in BIG-IP systems that may allow an authenticated attacker with administrative access to escalate their privileges. A successful exploit may allow the attacker to cross a security boundary.

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

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs administrative privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality low, integrity high, availability high.

Weakness class

CVE-2026-42919 is classified as CWE-121: Stack-based Buffer Overflow. An oversized write to a stack buffer overwrites saved state such as return addresses, which can redirect execution.

Affected software

CVE-2026-42919 is recorded against 22 packages.

  • big-ip-access-policy-manager (from 16.1.0 up to 16.1.6)
  • big-ip-advanced-firewall-manager (from 16.1.0 up to 16.1.6)
  • big-ip-advanced-web-application-firewall (from 16.1.0 up to 16.1.6)
  • big-ip-analytics (from 16.1.0 up to 16.1.6)
  • big-ip-application-acceleration-manager (from 16.1.0 up to 16.1.6)
  • big-ip-application-security-manager (from 16.1.0 up to 16.1.6)
  • big-ip-application-visibility-and-reporting (from 16.1.0 up to 16.1.6)
  • big-ip-automation-toolchain (from 16.1.0 up to 16.1.6)
  • big-ip-carrier-grade-nat (from 16.1.0 up to 16.1.6)
  • big-ip-container-ingress-services (from 16.1.0 up to 16.1.6)
  • big-ip-ddos-hybrid-defender (from 16.1.0 up to 16.1.6)
  • big-ip-domain-name-system (from 16.1.0 up to 16.1.6)
  • big-ip-edge-gateway (from 16.1.0 up to 16.1.6)
  • big-ip-fraud-protection-service (from 16.1.0 up to 16.1.6)
  • big-ip-global-traffic-manager (from 16.1.0 up to 16.1.6)
  • big-ip-link-controller (from 16.1.0 up to 16.1.6)
  • big-ip-local-traffic-manager (from 16.1.0 up to 16.1.6)
  • big-ip-policy-enforcement-manager (from 16.1.0 up to 16.1.6)
  • big-ip-ssl-orchestrator (from 16.1.0 up to 16.1.6)
  • big-ip-webaccelerator (from 16.1.0 up to 16.1.6)
  • big-ip-websafe (from 16.1.0 up to 16.1.6)
  • unknown

Timeline and source

Published on 13 May 2026 and last revised on 18 June 2026. No public exploit is currently recorded for this entry. Record sourced from NVD.

References

my.f5.com

Details

Severity MEDIUM
CVSS Score 6.7
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:H/A:H
CWE CWE-121
Public Exploit ✅ No
Source NVD
Published 2026-05-13
Updated 2026-08-11
Modified 2026-06-18
Fix URL N/A

Affected Packages

Software From version Fixed in
big-ip-access-policy-manager 16.1.0 16.1.6
big-ip-advanced-firewall-manager 16.1.0 16.1.6
big-ip-advanced-web-application-firewall 16.1.0 16.1.6
big-ip-analytics 16.1.0 16.1.6
big-ip-application-acceleration-manager 16.1.0 16.1.6
big-ip-application-security-manager 16.1.0 16.1.6
big-ip-application-visibility-and-reporting 16.1.0 16.1.6
big-ip-automation-toolchain 16.1.0 16.1.6
big-ip-carrier-grade-nat 16.1.0 16.1.6
big-ip-container-ingress-services 16.1.0 16.1.6
big-ip-ddos-hybrid-defender 16.1.0 16.1.6
big-ip-domain-name-system 16.1.0 16.1.6
big-ip-edge-gateway 16.1.0 16.1.6
big-ip-fraud-protection-service 16.1.0 16.1.6
big-ip-global-traffic-manager 16.1.0 16.1.6
big-ip-link-controller 16.1.0 16.1.6
big-ip-local-traffic-manager 16.1.0 16.1.6
big-ip-policy-enforcement-manager 16.1.0 16.1.6
big-ip-ssl-orchestrator 16.1.0 16.1.6
big-ip-webaccelerator 16.1.0 16.1.6
big-ip-websafe 16.1.0 16.1.6
unknown

References

Mitigation, Vendor Advisory https://my.f5.com/manage/s/article/K000158971

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