Path traversal in BIG-IP - CVE-2026-42780
Published: May 14, 2026
Vulnerability identifier: #VU131402
CSH Severity: Low
CVSS v4: 7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-42780
CWE-ID: CWE-22
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to overwrite, delete, or corrupt arbitrary local files.
The vulnerability exists due to path traversal in SSL Orchestrator when handling requests. A remote privileged user can send a specially crafted request to overwrite, delete, or corrupt arbitrary local files.
There is no data plane exposure; this is a control plane issue only.
Affected software
BIG-IP
How to mitigate CVE-2026-42780
Install security update from vendor's website.
BIG-IP - addressed in versions 17.1.3.1, 17.5.1.4, 21.0.0.1