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TI-2026-63338 Aliases CVE-2026-94127GHSA-qppv-6jrg-hxq4

BIG-IP APM OAuth vulnerability

Priority CRITICAL 99Exploited in the wildCWE-122Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-122 and the CVSS impact.

Summary

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.

Why it matters now

Exploitation Active In CISA KEV since 2026-09-22CISA due date 2026-09-25
EPSS 0.2655 98th percentileScored 2026-11-07
Fix Fixed BIG-IP (F5): Hotfix-BIGIP-21.1.0.2.0.30.22-ENG, Hotfix-BIGIP-17.5.1.9.0.160.12-ENG, Hotfix-BIGIP-17.1.3.5.0.41.14-ENG

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Active
Automatable
Yes
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
F5BIG-IP21.1.0 to before Hotfix-BIGIP-21.1.0.2.0.30.22-ENG; 17.5.0 to before Hotfix-BIGIP-17.5.1.9.0.160.12-ENG; 17.1.0 to before Hotfix-BIGIP-17.1.3.5.0.41.14-ENGHotfix-BIGIP-21.1.0.2.0.30.22-ENG, Hotfix-BIGIP-17.5.1.9.0.160.12-ENG, Hotfix-BIGIP-17.1.3.5.0.41.14-ENGPatch availableCNA
  • BIG-IP VendorF5 Affected 21.1.0 to before Hotfix-BIGIP-21.1.0.2.0.30.22-ENG; 17.5.0 to before Hotfix-BIGIP-17.5.1.9.0.160.12-ENG; 17.1.0 to before Hotfix-BIGIP-17.1.3.5.0.41.14-ENG Fixed in Hotfix-BIGIP-21.1.0.2.0.30.22-ENG, Hotfix-BIGIP-17.5.1.9.0.160.12-ENG, Hotfix-BIGIP-17.1.3.5.0.41.14-ENG Patch available CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:f5:big-ip_access_policy_manager:*:*:*:*:*:*:*:*17.0.0 – 17.1.3; 17.5.0 – 17.5.1VulnerableF5
cpe:2.3:a:f5:big-ip_access_policy_manager:21.1.0:*:*:*:*:*:*:*21.1.0VulnerableF5
  • cpe:2.3:a:f5:big-ip_access_policy_manager:*:*:*:*:*:*:*:* Versions 17.0.0 – 17.1.3; 17.5.0 – 17.5.1 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_access_policy_manager:21.1.0:*:*:*:*:*:*:* Versions 21.1.0 Vulnerable ·F5

Remediation

  • Fix · CNA BIG-IP (F5) Fixed in Hotfix-BIGIP-21.1.0.2.0.30.22-ENG, Hotfix-BIGIP-17.5.1.9.0.160.12-ENG, Hotfix-BIGIP-17.1.3.5.0.41.14-ENG

Timeline

  1. 2026-09-22 Added to CISA KEV
  2. 2026-10-02 Threatist record created from CVE-2026-94127
  3. 2026-10-03 Alias added: GHSA-qppv-6jrg-hxq4
  4. 2026-10-25 EPSS moved to the 95th–99th percentile

References

Advisory 1

  • TI-2023-25230 BIG-IP Configuration utility unauthenticated remote code execution vulnerability KEVCVSS 3.1CRITICAL 9.8
  • TI-2022-01269 Missing authentication in F5 BIG-IP KEVCVSS 3.1CRITICAL 9.8
  • TI-2021-05850 Memory corruption in BIG-IP KEVCVSS 3.1CRITICAL 9.8
  • TI-2021-05845 Server-side request forgery in BIG-IP; BIG-IQ KEVCVSS 3.1CRITICAL 9.8
  • TI-2020-04820 Path traversal in BIG-IP KEVCVSS 3.1CRITICAL 9.8
  • TI-2014-05975 GNU Bash through 4.3 bash43-025 processes trailing strings after certain malformed… KEVCVSS 3.1CRITICAL 9.8
See all 629 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences