CVE-2026-16791 Predictable Temporary File Symlink Vulnerability in Lenovo XClarity Essentials OneCLI
A local attacker can overwrite arbitrary files via symlink attacks when OneCLI runs with elevated privileges, potentially leading to privilege escalation.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-16791?
CVE-2026-16791 is a low-severity path traversal vulnerability in Lenovo XClarity Essentials OneCLI, published on 4 Aug 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
A temporary file creation vulnerability in the Linux version of Lenovo XClarity Essentials OneCLI 5.5.0 and below could allow a local low-privileged attacker to overwrite or truncate arbitrary local files with program-generated data when OneCLI is executed with elevated privileges.
Weakness: CWE-377
Which versions are affected by CVE-2026-16791?
How do I fix CVE-2026-16791?
No fix has been published for CVE-2026-16791 yet. Limit exposure of the affected software until one is available.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2026-16791 being exploited?
There is no known exploitation of CVE-2026-16791 in the wild and no public exploit code.
Sources
Also known as GHSA-frpq-fxq8-73pm.