Cyber Risks November 10, 2026 · Zero Day Initiative

ZDI-26-903: X.Org Server Font Alias Resolution Heap-based Buffer Overflow Privilege Escalation Vulnerability

This vulnerability allows local attackers to escalate privileges on affected installations of X.Org Server. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. The ZDI has assigned a CVSS rating of 7.8. The following CVEs are assigned: CVE-2026-50256.

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Topics

Vulnerabilities & Patching

Mentions

CVE-2026-50256

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