CVSS 103 sources verified·1 min read
By Lyrie Threat Intelligence·6/16/2026
CRITICAL: CVE-1999-0526 (CVSS 10) — x.org x11
CVE: CVE-1999-0526
CVSS: 10 (2.0) — AV:N/AC:L/Au:N/C:C/I:C/A:C
Severity: CRITICAL
Status: Critical advisory
Affected
- x.org x11
Summary
An X server's access control is disabled (e.g. through an "xhost +" command) and allows anyone to connect to the server.
Verified Sources
References
- http://www.kb.cert.org/vuls/id/704969
- http://www.kb.cert.org/vuls/id/704969
_Validated by the Lyrie Threat Intelligence Pipeline — 3 independent sources confirmed before publication. No speculation._
Lyrie Verdict
A vulnerability of this severity is exactly what Lyrie's anti-rogue-AI defense is built for: continuous, autonomous monitoring that doesn't wait for human reaction time.
Validated sources
- [1]NVD
- [2]GitHub Advisory
- [3]MITRE
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