CVE-2026-41527 Privilege escalation in Kleopatra
Local attackers can escalate privileges to that of a Kleopatra user due to a flaw in the single-instance enforcement mechanism on Windows.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-41527?
CVE-2026-41527 is a medium-severity vulnerability in KDE Kleopatra, published on 21 Apr 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
KDE Kleopatra before 26.08.0 on Windows allows local users to obtain the privileges of a Kleopatra user, because there is an error in the mechanism (KUniqueService) for ensuring that only one instance is running.
Weakness: CWE-670
Which versions are affected by CVE-2026-41527?
How do I fix CVE-2026-41527?
No fix has been published for CVE-2026-41527 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-41527 being exploited?
There is no known exploitation of CVE-2026-41527 in the wild and no public exploit code.
Sources
Also known as GHSA-g2r2-6v8v-5qgm.