CVE-2026-42919

published 2026-05-13

CVE-2026-42919: A vulnerability exists in BIG-IP systems that may allow an authenticated attacker with administrative access to escalate their privileges. A successful exploit…

high 7.1 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 E X CR X IR X AR X MAV X MAC X MAT X MPR X MUI X MVC X MVI X MVA X MSC X MSI X MSA X S X AU X R X V X RE X U X

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.

Affected

5 ranges

Vendor	Product	Version range	Fixed in
f5	big-ip	—	—
f5	big-ip	>= 16.1.0 < *	*
f5	big-ip	>= 17.1.0 < 17.1.3.1	17.1.3.1
f5	big-ip	>= 17.5.0 < 17.5.1.4	17.5.1.4
f5	big-ip	>= 21.0.0 < 21.0.0.1	21.0.0.1

CWE-121