MSRXCVE-2026-94127
CVE-2026-94127
BIG-IP APM OAuth vulnerability
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 evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
CVSS 4.0 · CNA
chance of exploitation in the next 30 days (EPSS; higher than 97% of CVEs)
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.
Scores
Affected products
- F5 BIG-IP: 21.1.0 to < Hotfix-BIGIP-21.1.0.2.0.30.22-ENG; 17.5.0 to < Hotfix-BIGIP-17.5.1.9.0.160.12-ENG; 17.1.0 to < Hotfix-BIGIP-17.1.3.5.0.41.14-ENG
Weakness: CWE-122
1 references (advisories, patches, write-ups)
- https://my.f5.com/manage/s/article/K000162605 · vendor-advisory
Sources: CVE.org, FIRST EPSS. Missing ones did not answer or have no record yet.