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TI-2026-28895 Aliases CVE-2026-40061GHSA-rpj4-762v-f8r2

iControl REST and tmsh vulnerability

Priority LOW 38CWE-77Published · Updated

Key facts

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

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-77.

Summary

When BIG-IP DNS is provisioned, a vulnerability exists in an undisclosed iControl REST and BIG-IP TMOS Shell (tmsh) command that may allow an authenticated attacker with the Resource Administrator or Administrator role to execute arbitrary system commands with higher privileges. In Appliance mode deployments, a successful exploit can allow the attacker to cross a security boundary.  Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00235 14th percentileScored 2026-11-07
Fix Fixed BIG-IP (F5): 21.1.0, 21.0.0.1, 17.5.1.4 +1

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
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-IP21.0.0 to before 21.0.0.1; 17.5.0 to before 17.5.1.4; 17.1.0 to before 17.1.3.1; 16.1.0 and later21.1.0, 21.0.0.1, 17.5.1.4, 17.1.3.1Patch availableCNA
  • BIG-IP VendorF5 Affected 21.0.0 to before 21.0.0.1; 17.5.0 to before 17.5.1.4; 17.1.0 to before 17.1.3.1; 16.1.0 and later Fixed in 21.1.0, 21.0.0.1, 17.5.1.4, 17.1.3.1 Patch available CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:f5:big-ip_domain_name_system:*:*:*:*:*:*:*:*16.1.0 – 16.1.6; 17.1.0 – 17.1.3; 17.5.0 – 17.5.1VulnerableF5
cpe:2.3:a:f5:big-ip_domain_name_system:21.0.0:*:*:*:*:*:*:*21.0.0VulnerableF5
  • cpe:2.3:a:f5:big-ip_domain_name_system:*:*:*:*:*:*:*:* Versions 16.1.0 – 16.1.6; 17.1.0 – 17.1.3; 17.5.0 – 17.5.1 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_domain_name_system:21.0.0:*:*:*:*:*:*:* Versions 21.0.0 Vulnerable ·F5

Remediation

  • Fix · CNA BIG-IP (F5) Fixed in 21.1.0, 21.0.0.1, 17.5.1.4, 17.1.3.1

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    F5 BIG-IP 17.1.3.1, 17.5.1.4, 21.0.0.1

    13 records Highest priority Priority MEDIUM 5 MEDIUM, 8 LOW

    Other records, highest priority first

    Show all 13 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-40061
  2. 2026-10-03 Alias added: GHSA-rpj4-762v-f8r2

References

Patch 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-2023-25231 BIG-IP Configuration utility authenticated SQL injection vulnerability KEVCVSS 3.1HIGH 8.8
See all 468 →

Sources

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