CVE-2026-94127
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
1Patches
Vulnerability mechanics
References
2- my.f5.com/manage/s/article/K000162605nvdVendor Advisory
- www.cisa.gov/known-exploited-vulnerabilities-catalognvdUS Government Resource
News mentions
12- Critical FortiMail Zero-Day Flaw Exploited in Attacks Allows Unauthenticated Arbitrary File WritesThe Hacker News · Oct 2, 2026
- ⚡ Weekly Recap: $387M Crypto Hack, Citrix Exploits, AI Agents Go Off-Script, and More ThreatsThe Hacker News · Sep 28, 2026
- 28th September – Threat Intelligence ReportCheck Point Research · Sep 28, 2026
- Is This A Joke? In The Auth Header? (F5 BIG-IP UnAuth Heap-Overflow to RCE CVE-2026-94127)watchTowr Labs · Sep 23, 2026
- Someone's attacking a critical 0-day RCE in F5 BIG-IP APMThe Register Security · Sep 23, 2026
- Attackers hit Check Point Management Servers and Spark firewalls, F5 BIG-IP APM instancesHelp Net Security · Sep 23, 2026
- CVE-2026-94127: Critical Unauthenticated RCE in F5 BIG-IP APMRapid7 Blog · Sep 23, 2026
- F5 Patches Critical BIG-IP APM Zero-Day Exploited for Unauthenticated RCE on OAuth ServersThe Hacker News · Sep 23, 2026
- Critical F5 BIG-IP Vulnerability Exploited as Zero-DaySecurityWeek · Sep 23, 2026
- Hackers Exploiting F5 BIG-IP OAuth Server 0-day Flaw to Gain Remote Code ExecutionCyber Security News · Sep 23, 2026
- F5 CVE-2026-94127: Actively Exploited Flaw Added to CISA KEVVypr Intelligence · Sep 22, 2026
- CISA Adds Four Known Exploited Vulnerabilities to CatalogCISA Alerts