On F5 BIG-IP PEM versions 13.0.0, 12.0.0-12.1.3.1, 11.6.0-11.6.2, 11.5.1-11.5.5, or…
Priority LOW 28Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- High
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA.
Summary
On F5 BIG-IP PEM versions 13.0.0, 12.0.0-12.1.3.1, 11.6.0-11.6.2, 11.5.1-11.5.5, or 11.2.1, under certain conditions, TMM may crash when processing compressed data though a Virtual Server with an associated PEM profile using the content insertion option.
Why it matters now
EPSS 0.00847 58th 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 (PEM) | 13.0.0; 12.0.0-12.1.3.1; 11.6.0-11.6.2; 11.5.1-11.5.5; 11.2.1 | — | No fix listed | CNA |
- BIG-IP (PEM) VendorF5 Affected 13.0.0; 12.0.0-12.1.3.1; 11.6.0-11.6.2; 11.5.1-11.5.5; 11.2.1 Fixed in — No fix listed CNA
CPE configurations NVD · 3
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:f5:big-ip_policy_enforcement_manager:*:*:*:*:*:*:*:* | 11.5.1 – 11.5.5; 11.6.0 – 11.6.2; 12.0.0 – 12.1.3 | Vulnerable | F5 |
| cpe:2.3:a:f5:big-ip_policy_enforcement_manager:11.2.1:*:*:*:*:*:*:* | 11.2.1 | Vulnerable | F5 |
| cpe:2.3:a:f5:big-ip_policy_enforcement_manager:13.0.0:*:*:*:*:*:*:* | 13.0.0 | Vulnerable | F5 |
- cpe:2.3:a:f5:big-ip_policy_enforcement_manager:*:*:*:*:*:*:*:* Versions 11.5.1 – 11.5.5; 11.6.0 – 11.6.2; 12.0.0 – 12.1.3 Vulnerable ·F5
- cpe:2.3:a:f5:big-ip_policy_enforcement_manager:11.2.1:*:*:*:*:*:*:* Versions 11.2.1 Vulnerable ·F5
- cpe:2.3:a:f5:big-ip_policy_enforcement_manager:13.0.0:*:*:*:*:*:*:* Versions 13.0.0 Vulnerable ·F5
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2018-5508
- 2026-10-03 Alias added: GHSA-8pm9-x397-wxmf
References
More F5 Big-ip Policy Enforcement 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-2018-5508 · CVE Program
- CVE-2018-5508 · NVD
- FIRST EPSS
- GHSA-8pm9-x397-wxmf · GitHub Advisory Database · CC BY 4.0
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