CVE-2026-41051 csync2 uses insecure temporary directories when compiled with C99 or later
Attackers can exploit a race condition in temporary directory handling to escalate privileges or modify data in csync2.
- 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
- Available
What is CVE-2026-41051?
CVE-2026-41051 is a medium-severity vulnerability in openSUSE Tumbleweed, published on 13 May 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
csync2 uses insecure temporary directories when compiled with C99 or later, allowing for TOCTOU style attacks on the temporary directories.
Weakness: CWE-367
Which versions are affected by CVE-2026-41051?
Linux distribution packages (3)
csync2 SUSE:Linux Enterprise High Availability Extension 16.0 | All versions | 2.0+git.1600444747.83b3644-160000.3.1 |
csync2 SUSE:Linux Enterprise Server for SAP applications 16.0 | All versions | 2.0+git.1600444747.83b3644-160000.3.1 |
csync2 openSUSE:Tumbleweed | All versions | 2.0+git.1600444747.83b3644-3.1 |
How do I fix CVE-2026-41051?
Apply the vendor's patch.
Is CVE-2026-41051 being exploited?
There is no known exploitation of CVE-2026-41051 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2026-41051, GHSA-7mqw-hr29-pj76, SUSE-SU-2026:2116-1, SUSE-SU-2026:21994-1, SUSE-SU-2026:22041-1, UBUNTU-CVE-2026-41051 and 2 more.