CVE-2026-94127 F5 BIG-IP APM Heap-based Buffer Overflow
Unauthenticated attackers can achieve remote code execution on BIG-IP systems configured as OAuth Authorization Servers via malicious traffic.
- Exploited in the wild
- Since 22 Sep 2026
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-94127?
CVE-2026-94127 is a critical memory corruption vulnerability in F5 Big-Ip Access Policy Manager, published on 22 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
When a BIG-IP APM access policy and an OAuth profile are configured on a virtual server, specific malicious traffic can lead to remote code execution (RCE). This vulnerability is only present when BIG-IP APM is configured as an OAuth Authorization Server. Deployments using APM strictly as an OAuth Client / Resource Server (without OAuth authorization server profiles configured) are not affected by this vulnerability.
Impact: This vulnerability allows an unauthenticated attacker to perform remote code execution. The BIG-IP system in Appliance mode is also vulnerable. This is a data plane issue; there is no control plane exposure.
Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
Weakness: CWE-122
Which versions are affected by CVE-2026-94127?
It affects 1 product.
Products include F5 Big-Ip Access Policy Manager.
How do I fix CVE-2026-94127?
No fix has been published for CVE-2026-94127 yet. Limit exposure of the affected software until one is available. US federal agencies must fix it by 25 Sep 2026.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-94127 being exploited?
Yes. Attackers have exploited CVE-2026-94127 in the wild since at least 22 Sep 2026.
Public exploit code: 2 proofs of concept on GitHub.
Other vulnerabilities in F5 Big-Ip Access Policy Manager
- CVE-2023-46747 F5 BIG-IP Configuration Utility Authentication Bypass
- CVE-2022-1388 F5 BIG-IP Missing Authentication
- CVE-2021-22986 F5 BIG-IP and BIG-IQ Centralized Management iControl REST Remote Code Execution
- CVE-2021-22991 F5 BIG-IP Traffic Management Microkernel Buffer Overflow
- CVE-2020-5902 F5 BIG-IP Traffic Management User Interface (TMUI) Remote Code Execution
Sources
Also known as GHSA-qppv-6jrg-hxq4.