CVE-2026-94127
CRITICAL 9.3 KNOWN EXPLOITED PoC CATALOGUEDWhen 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.
Confirmed exploited in the wild — in CISA KEV since 2026-09-22. Patch or mitigate now.
Exploitation likelihood
24.9%chance of exploitation in 30 days · 98th percentile
Impact if exploited
9.3CVSS 4.0 · CRITICAL
- ConfidentialityHigh
- IntegrityHigh
- AvailabilityHigh
What an attacker needs
- ✓Access: Reachable over the network — no local access needed
- ✓Privileges: No account or privileges required
- ✓User interaction: No user interaction needed
- ✓Complexity: No special conditions — reliably repeatable
- ✓Requirements: No special attack requirements
✓ lowers the bar for an attacker · ⚠ raises it
Proof of concept
Public PoC or exploit resources are catalogued below.
Listed by the named source; Vulnpedia has not tested these resources.
PoC data: JSON
Resource commands
curl -s https://vulnpedia.com/cve/CVE-2026-94127/poc.jsonMachine-readable PoC index for this CVE (for automation).Search for new PoCs
Search GitHub now — results may be empty or unverified.
Tracked sources are checked daily for recent CVEs, including PoCs published after the original disclosure. A later release appears after a tracked source lists it and a refresh succeeds.
Data snapshot:
Weakness (CWE)
- CWE-122: Heap-based Buffer Overflow
CVSS vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
References and research data (JSON)
Unverified PoC candidates
Catalogue matches for further research. These repositories have not been validated as working exploits.
2 candidates
- https://github.com/FurkanKAYAPINAR/CVE-2026-94127
CVE-2026-94127
PoC-in-GitHub · CVE-2026-94127
PoC-in-GitHub · CVE-2026-94127 · Updated 2026-09-23T11:11:13Z - https://github.com/watchtowrlabs/watchTowr-vs-f5-bigip-PreAuth-RCE-CVE-2026-94127PoC-in-GitHub · CVE-2026-94127
PoC-in-GitHub · CVE-2026-94127 · Updated 2026-10-09T08:31:27Z
Additional exploitation reports
Source-specific reports, separate from CISA KEV. Repeated observations from one source are not independent confirmations.
- ENISA EU KEV · 2026-09-22EUVD · EUVD-2026-84427
- VulnCheck KEV · 2026-09-22T00:00:00Z
Source guidance: 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.
Source ransomware assessment: Unknown
VulnCheck KEV · CVE-2026-94127 · Updated 2026-09-22T00:00:00Z - VulnCheck KEV · 2026-09-22T00:00:00ZVulnCheck KEV · CVE-2026-94127
VulnCheck KEV · CVE-2026-94127
Known Affected Software Configurations
| Vendor | Product | Version range |
|---|---|---|
| F5 | Big Ip Access Policy Manager | ≥ 17.0.0 and ≤ 17.1.3 |
| F5 | Big Ip Access Policy Manager | ≥ 17.5.0 and ≤ 17.5.1 |
| F5 | Big Ip Access Policy Manager | 21.1.0 |
All CVSS metrics
- CRITICAL 9.8 v3.1 · CNA Primary
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - CRITICAL 9.3 v4.0 · CNA Primary
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N - CRITICAL 9.3 v4.0 · NVD Secondary
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - CRITICAL 9.8 v3.1 · NVD Secondary
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
References
Advisories
- https://my.f5.com/manage/s/article/K000162605 CVE record · f5 · Updated 2026-09-23T00:45:09.611Z
NVD · CVE-2026-94127 · Updated 2026-09-23T14:32:07.910
VulnCheck KEV · CVE-2026-94127 · Updated 2026-09-22T00:00:00Z - https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-94127 CVE record · CISA-ADP · Updated 2026-09-23T03:55:44.614Z
NVD · CVE-2026-94127 · Updated 2026-09-23T14:32:07.910 - https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-84427 EUVD · EUVD-2026-84427
- https://vulncheck.com/kev VulnCheck KEV · CVE-2026-94127 · Updated 2026-09-22T00:00:00Z
Technical & other
- https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json VulnCheck KEV · CVE-2026-94127 · Updated 2026-09-22T00:00:00Z
- https://vulncheck.com/xdb/2dab7684917f VulnCheck KEV · 2dab7684917f · Updated 2026-09-22T00:00:00Z
- https://github.com/watchtowrlabs/watchTowr-vs-f5-bigip-PreAuth-RCE-CVE-2026-94127 VulnCheck KEV · 2dab7684917f · Updated 2026-09-22T00:00:00Z