HighCVENVD — high/critical CVEs (rolling 7d)· 23 Apr 2026
CVE-2026-33999 — A flaw was found in the X.Org X server. This integer underflow vulnerability, s…
Severity: High · Kind: Vulnerability
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From the source
A flaw was found in the X.Org X server. This integer underflow vulnerability, specifically in the XKB compatibility map handling, allows an attacker with local or remote X11 server access to trigger a buffer read overrun. This can lead to memory-safety violations and potentially a denial of service (DoS) or other severe impacts.
Vulnerability facts
- CVE
- CVE-2026-33999
- CVSS
- 7.8
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