BIG-IP APM OAuth vulnerability
Published Sep 22, 2026 ·Due Sep 25, 2026
9.3
CRITICALCVSS 4.0
EPSS 2.23%
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.
Affected products
-
- Version 17.1.0StatusaffectedConstraints<Hotfix-BIGIP-17.1.3.5.0.41.14-ENG
- Version 17.5.0StatusaffectedConstraints<Hotfix-BIGIP-17.5.1.9.0.160.12-ENG
- Version 21.1.0StatusaffectedConstraints<Hotfix-BIGIP-21.1.0.2.0.30.22-ENG
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
- ≥ 17.0.0 · ≤ 17.1.3
- ≥ 17.5.0 · ≤ 17.5.1
- 21.1.0
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
Vendor solution
An iRule is available upon request. Open a ticket with F5 support to request this.
Metrics
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
1 other source (NVD) ▾
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
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
No CVSS v3.0 score for this CVE.
No CVSS v2.0 score for this CVE.
Date Added
Sep 22, 2026
Patch Due
Sep 25, 2026
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.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
ActiveAutomatable
YesTechnical Impact
TotalDecision
n/aAssessed Sep 22, 2026 · SSVC 2.0.3
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
Not enough EPSS history yet for a chart. At least two recorded scores are needed.
Percentile over time
Not enough EPSS history yet for a chart. At least two recorded scores are needed.
References (2)
- https://my.f5.com/manage/s/article/K000162605 vendor-advisoryVendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-94127 government-resourceUS Government Resource
| Link | Providers | Tags |
|---|---|---|
| https://my.f5.com/manage/s/article/K000162605 | vendor-advisoryVendor Advisory | |
| https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-94127 | government-resourceUS Government Resource |
Change history (0)
No recorded changes yet.