Search threats, CVEs… ⌘K
← Back to CVE intelligence
CVE intelligence

CVE-2025-26595

Vulnerability intelligence

Published Feb 25, 2025Sources checked Oct 3, 2026
7.8HIGHCVSS out of 10
What this means

Review the available evidence

CVE-2025-26595 and is rated High severity with a CVSS score of 7.8. It is not in the current CISA KEV record we collected. That does not prove exploitation has not occurred.

What to do next

Remediation and response

CISA KEVNot listedBased on the latest collected catalog
EPSS0.4%Estimated 30-day exploitation probability
Ransomware useNot markedCISA KEV ransomware field
Threat actors0Source-linked actor relationships
Overview

What is CVE-2025-26595?

A buffer overflow flaw was found in X.Org and Xwayland. The code in XkbVModMaskText() allocates a fixed-sized buffer on the stack and copies the names of the virtual modifiers to that buffer. The code fails to check the bounds of the buffer and would copy the data regardless of the size.