Quick answers
- Is CVE-2026-94127 exploited in the wild?
- Yes. CVE-2026-94127 is known to be exploited in the wild, first recorded on 22 September 2026. Treat it as urgent.
- How severe is CVE-2026-94127?
- Critical severity, with a CVSS score of 9.8, published 22 September 2026.
- Which products and versions are affected?
- F5 BIG-IP APM.
- Is there a fix for CVE-2026-94127?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-94127 attacked?
- It is attacked over the network.
- Am I affected by CVE-2026-94127?
- Check whether you run F5 BIG-IP APM. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
A heap-based buffer overflow exists in F5 BIG-IP APM's OAuth authentication handling when both an access policy and OAuth profile are simultaneously configured on a virtual server. The vulnerability resides in the policy engine's credential processing logic and is reachable over the network without prior authentication. An attacker can send a specially crafted request to the affected virtual server to trigger the buffer overflow, leading to heap memory corruption and remote code execution with the privileges of the BIG-IP process. The vulnerability has been observed actively exploited in the wild, indicating public exploit code or active attack campaigns are operational. Patches should be obtained directly from F5 for affected BIG-IP versions.
Affected products
- F5 BIG-IP APM
Timeline
- 2026-09-22: disclosed
- exploited: Known to be actively exploited in the wild