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TI-2018-04042 Aliases CVE-2018-5537GHSA-qm9v-23h5-wm7p

Improper input validation in F5 BIG-IP

Priority LOW 26CWE-20Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
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

A remote attacker may be able to disrupt services on F5 BIG-IP 13.0.0-13.1.0.5, 12.1.0-12.1.3.5, 11.6.0-11.6.3.1, or 11.2.1-11.5.6 if the TMM virtual server is configured with a HTML or a Rewrite profile. TMM may restart while processing some specially prepared HTML content from the back end.

Why it matters now

EPSS 0.01194 68th 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

VendorProductAffected versionsFixed inStatusSource
F5BIG-IP (LTM, AAM, AFM, APM, ASM, Edge Gateway, GTM, PEM, WebAccelerator, WebSafe)13.0.0-13.1.0.5; 12.1.0-12.1.3.5; 11.6.0-11.6.3.1; 11.2.1-11.5.6—No fix listedCNA
  • BIG-IP (LTM, AAM, AFM, APM, ASM, Edge Gateway, GTM, PEM, WebAccelerator, WebSafe) VendorF5 Affected 13.0.0-13.1.0.5; 12.1.0-12.1.3.5; 11.6.0-11.6.3.1; 11.2.1-11.5.6 Fixed in — No fix listed CNA

CPE configurations NVD · 10

CPEVersionsRoleVendor
cpe:2.3:a:f5:big-ip_local_traffic_manager:*:*:*:*:*:*:*:*11.2.1 – 11.5.6; 11.6.0 – 11.6.3.1; 12.1.0 – 12.1.3.5; 13.0.0 – 13.1.0.5VulnerableF5
cpe:2.3:a:f5:big-ip_application_acceleration_manager:*:*:*:*:*:*:*:*11.2.1 – 11.5.6; 11.6.0 – 11.6.3.1; 12.1.0 – 12.1.3.5; 13.0.0 – 13.1.0.5VulnerableF5
cpe:2.3:a:f5:big-ip_advanced_firewall_manager:*:*:*:*:*:*:*:*11.2.1 – 11.5.6; 11.6.0 – 11.6.3.1; 12.1.0 – 12.1.2; 13.0.0 – 13.1.0.5VulnerableF5
cpe:2.3:a:f5:big-ip_access_policy_manager:*:*:*:*:*:*:*:*11.2.1 – 11.5.6; 11.6.0 – 11.6.3.1; 12.1.0 – 12.1.3.5; 13.0.0 – 13.1.0.5VulnerableF5
cpe:2.3:a:f5:big-ip_application_security_manager:*:*:*:*:*:*:*:*10.1.0 – 11.5.6; 11.6.0 – 11.6.3.1; 12.1.0 – 12.1.3.5; 13.0.0 – 13.1.0.5VulnerableF5
cpe:2.3:a:f5:big-ip_edge_gateway:*:*:*:*:*:*:*:*11.2.1 – 11.5.6; 11.6.0 – 11.6.3.1; 12.1.0 – 12.1.3.5; 13.0.0 – 13.1.0.5VulnerableF5
cpe:2.3:a:f5:big-ip_global_traffic_manager:*:*:*:*:*:*:*:*11.2.1 – 11.5.6; 11.6.0 – 11.6.3.1; 12.1.0 – 12.1.3.5; 13.0.0 – 13.1.0.5VulnerableF5
cpe:2.3:a:f5:big-ip_policy_enforcement_manager:*:*:*:*:*:*:*:*11.2.1 – 11.5.6; 11.6.0 – 11.6.3.1; 12.1.0 – 12.1.3.5; 13.0.0 – 13.1.0.5VulnerableF5
cpe:2.3:a:f5:big-ip_webaccelerator:*:*:*:*:*:*:*:*11.2.1 – 11.5.6; 11.6.0 – 11.6.3.1; 12.1.0 – 12.1.3.5; 13.0.0 – 13.1.0.5VulnerableF5
cpe:2.3:a:f5:big-ip_websafe:*:*:*:*:*:*:*:*11.2.1 – 11.5.6; 11.6.1 – 11.6.3.1; 12.1.0 – 12.1.3.5; 13.0.0 – 13.1.0.5VulnerableF5
  • cpe:2.3:a:f5:big-ip_local_traffic_manager:*:*:*:*:*:*:*:* Versions 11.2.1 – 11.5.6; 11.6.0 – 11.6.3.1; 12.1.0 – 12.1.3.5; 13.0.0 – 13.1.0.5 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_application_acceleration_manager:*:*:*:*:*:*:*:* Versions 11.2.1 – 11.5.6; 11.6.0 – 11.6.3.1; 12.1.0 – 12.1.3.5; 13.0.0 – 13.1.0.5 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_advanced_firewall_manager:*:*:*:*:*:*:*:* Versions 11.2.1 – 11.5.6; 11.6.0 – 11.6.3.1; 12.1.0 – 12.1.2; 13.0.0 – 13.1.0.5 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_access_policy_manager:*:*:*:*:*:*:*:* Versions 11.2.1 – 11.5.6; 11.6.0 – 11.6.3.1; 12.1.0 – 12.1.3.5; 13.0.0 – 13.1.0.5 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_application_security_manager:*:*:*:*:*:*:*:* Versions 10.1.0 – 11.5.6; 11.6.0 – 11.6.3.1; 12.1.0 – 12.1.3.5; 13.0.0 – 13.1.0.5 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_edge_gateway:*:*:*:*:*:*:*:* Versions 11.2.1 – 11.5.6; 11.6.0 – 11.6.3.1; 12.1.0 – 12.1.3.5; 13.0.0 – 13.1.0.5 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_global_traffic_manager:*:*:*:*:*:*:*:* Versions 11.2.1 – 11.5.6; 11.6.0 – 11.6.3.1; 12.1.0 – 12.1.3.5; 13.0.0 – 13.1.0.5 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_policy_enforcement_manager:*:*:*:*:*:*:*:* Versions 11.2.1 – 11.5.6; 11.6.0 – 11.6.3.1; 12.1.0 – 12.1.3.5; 13.0.0 – 13.1.0.5 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_webaccelerator:*:*:*:*:*:*:*:* Versions 11.2.1 – 11.5.6; 11.6.0 – 11.6.3.1; 12.1.0 – 12.1.3.5; 13.0.0 – 13.1.0.5 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_websafe:*:*:*:*:*:*:*:* Versions 11.2.1 – 11.5.6; 11.6.1 – 11.6.3.1; 12.1.0 – 12.1.3.5; 13.0.0 – 13.1.0.5 Vulnerable ·F5

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2018-5537
  2. 2026-10-03 Alias added: GHSA-qm9v-23h5-wm7p

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