Cross-site scripting in F5 BIG-IP APM
Priority LOW 25CWE-79Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-79.
Summary
In BIG-IP APM portal access on versions 15.0.0-15.1.0, 14.0.0-14.1.2.3, 13.1.0-13.1.3.2, 12.1.0-12.1.5, and 11.5.2-11.6.5.1, when backend servers serve HTTP pages with special JavaScript code, this can lead to internal portal access name conflict.
Why it matters now
EPSS 0.00521 44th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| F5 | BIG-IP APM | 15.0.0-15.1.0; 14.0.0-14.1.2.3; 13.1.0-13.1.3.2; 12.1.0-12.1.5; 11.5.2-11.6.5.1 | — | No fix listed | CNA |
- BIG-IP APM VendorF5 Affected 15.0.0-15.1.0; 14.0.0-14.1.2.3; 13.1.0-13.1.3.2; 12.1.0-12.1.5; 11.5.2-11.6.5.1 Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:f5:big-ip_access_policy_manager:*:*:*:*:*:*:*:* | 11.5.2 – 11.6.5; 12.1.0 – 12.1.5; 13.1.0 – 13.1.3; 14.0.0 – 14.1.2; 15.0.0 – 15.1.0 | Vulnerable | F5 |
- cpe:2.3:a:f5:big-ip_access_policy_manager:*:*:*:*:*:*:*:* Versions 11.5.2 – 11.6.5; 12.1.0 – 12.1.5; 13.1.0 – 13.1.3; 14.0.0 – 14.1.2; 15.0.0 – 15.1.0 Vulnerable ·F5
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2020-5853
- 2026-10-03 Alias added: GHSA-7mwx-h8w3-g965
References
More F5 Big-ip Access Policy Manager vulnerabilities
- 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
Sources
- CVE-2020-5853 · CVE Program
- CVE-2020-5853 · NVD
- FIRST EPSS
- GHSA-7mwx-h8w3-g965 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences