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HIGHCVE-2026-42919Published Modified CNA f5

CVE-2026-42919: F5 BIG-IP Appliance Mode Vulnerability

A vulnerability exists in BIG-IP systems that may allow an authenticated attacker with administrative access to escalate their privileges. A successful exploit may allow the attacker to cross a security boundary.  Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

Metrics

CVSS v4.0
7.1
Severity
HIGH
Fixed in
*
Affected Products
1

Fix available

*17.1.3.117.5.1.421.0.0.121.1.0
Patch commits
Affected packages
  • F5 / BIG-IP
    < 21.0.0.1 (from 21.0.0) · < 17.5.1.4 (from 17.5.0) · < 17.1.3.1 (from 17.1.0) · < * (from 16.1.0)
    Fixed in 21.1.0
CVSS Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:H/VA:H/SC:N/SI:N/SA:N
References