CVE detail
CVE-2026-94127: F5 BIG-IP APM Heap-based Buffer Overflow Vulnerability
Source: CISA Known Exploited Vulnerabilities catalog · back to feed
Vendor / product
F5 · BIG-IP APM
- Date added (KEV)
- Sep 22, 2026
- CISA due date
- Sep 25, 2026
- Ransomware campaign use
- Unknown
Required action
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.
Vendor fix: Vendor advisory
Scorifya interpretation
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Plain English
Technical detail
From CISA
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.
For temporary mitigation to allow for proactive forensic triage, apply the vendor-provided iRule. Once completed, install the final vendor patch as soon as possible. For more information please see: https://my.f5.com/manage/s/article/K000162605 ; BOD 26-04: https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk ; Forensics Triage Requirements: https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk ; https://nvd.nist.gov/vuln/detail/CVE-2026-94127
See what attackers can see on your domain
This vulnerability is on CISA's Known Exploited Vulnerabilities list, so it is being exploited in the wild right now. Scorifya can't test for F5 directly, but in about 30 seconds it shows what your own domain exposes publicly across TLS, security headers, DNS, and cookies: the surface attackers probe first.
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Other recent CVEs from F5
- CVE-2025-53521BIG-IP, F5 BIG-IP Stack-Based Buffer Overflow Vulnerability
- CVE-2023-46747BIG-IP Configuration Utility, F5 BIG-IP Configuration Utility Authentication Bypass Vulnerability
- CVE-2023-46748BIG-IP Configuration Utility, F5 BIG-IP Configuration Utility SQL Injection Vulnerability
- CVE-2022-1388BIG-IP, F5 BIG-IP Missing Authentication Vulnerability
- CVE-2021-22991BIG-IP Traffic Management Microkernel, F5 BIG-IP Traffic Management Microkernel Buffer Overflow