What is CVE-2026-33999?

CVE-2026-33999 is a security advisory published by Microsoft Security Response Center (MSRC) with Medium severity. Xorg: xwayland: x.org x server: denial of service via integer underflow in xkb compatibility map handling

Which CVE IDs does CVE-2026-33999 cover?

CVE-2026-33999 covers the following CVE IDs: CVE-2026-33999. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2026-33999?

CVE-2026-33999 has a CVSS v3 base score of 6.6, published by Microsoft Security Response Center (MSRC).

CVE-2026-33999MediumCVSS 6.6

Xorg: xwayland: x.org x server: denial of service via integer underflow in xkb compatibility map handling

Vendor

Microsoft Security Response Center (MSRC)

Published

June 2, 2026

Last Modified

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🔗 CVE IDs covered (1)

CVE-2026-33999 →