ZDI-26-764: X.Org Server XFixes Pointer Barrier Heap-based Buffer Overflow Privilege Escalation Vulnerability
ZDI disclosed an X.Org Server XFixes heap overflow that lets local attackers escalate privileges.
Trend Micro's Zero Day Initiative published ZDI-26-764, a heap-based buffer overflow in the X.Org Server XFixes Pointer Barrier code. A local attacker who can already run low-privileged code can escalate privileges on affected installations. ZDI assigned CVSS 7.8 and CVE-2026-93519. The advisory does not report exploitation in the wild.
- Heap-based buffer overflow in XFixes Pointer Barrier code
- Local privilege escalation; low-privileged code required first
- ZDI CVSS 7.8, tracked as CVE-2026-93519
- No in-the-wild exploitation is stated
Vulnerabilities mentionedAll →
- published —
| CVE | Vulnerability | CVSS | EPSS | Flags | Affected | Exposure | Published |
|---|---|---|---|---|---|---|---|
| CVE-2026-93519 | NVD description · AI analysis pending | — | — | — | — | — |
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-2026-93519.
This source does not provide full text. Read it at zerodayinitiative.com.