— Unscored

F5 BIG-IP APM Heap-based Buffer Overflow Vulnerability

CVE-2026-94127 Exploited

F5 BIG-IP APM contains a heap-based buffer overflow vulnerability when access policy and an OAuth profile are configured on a virtual server. This vulnerability could allow an unauthenticated attacker to perform remote code execution.

Being exploited in the wild

Catalogued 22 September 2026 · US federal remediation deadline 25 September 2026

Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for…

Exploit code is also public: Public PoC

Public PoCwatchtowrlabs/watchTowr-vs-f5-bigip-PreAuth-RCE-CVE-2026-9412715 stars
Public PoCFurkanKAYAPINAR/CVE-2026-94127

Assessment

CVSS: Not yet scored
Severity: Unscored
Known exploited: Yes — listed in the CISA KEV catalog
Exploit availability: CISA KEV, Public PoC
Published: 22 September 2026
Last updated: 22 September 2026
Affected: F5 · BIG-IP APM
Weakness: CWE-122

At the source

CISA KEV

References

https://www.cisa.gov/known-exploited-vulnerabilities-catalog

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