CVE-2025-26600
7.8 · HIGHOverview
CVE-2025-26600 is a high-severity vulnerability affecting tigervnc tigervnc. It was published on February 25, 2025 and has a CVSS 3.1 base score of 7.8 (HIGH).
This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.
Technical Description
A use-after-free flaw was found in X.Org and Xwayland. When a device is removed while still frozen, the events queued for that device remain while the device is freed. Replaying the events will cause a use-after-free.
Remediation
Check the references section for vendor advisories and patches from tigervnc. Update tigervnc to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| x.org | x_server | >= 0, < 21.1.16 | Affected |
| x.org | xwayland | >= 0, < 24.1.6 | Affected |
References
Frequently Asked Questions
What is CVE-2025-26600?
CVE-2025-26600 is a high-severity vulnerability affecting tigervnc tigervnc. It was published on February 25, 2025 and has a CVSS 3.1 base score of 7.8 (HIGH).
How severe is CVE-2025-26600?
This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2025-26600?
Check the references section for vendor advisories and patches from tigervnc. Update tigervnc to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2025-26600?
CyberStrike's AI-powered security agents can automatically detect CVE-2025-26600 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
Automated penetration testing that runs continuously, not just quarterly.
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Browser-based exploitation validates findings with real proof-of-concept.
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