What is CVE-2026-50256?

CVE-2026-50256 is a security advisory published by Microsoft Security Response Center (MSRC) with High severity. Xorg-x11-server: xorg-x11-server-xwayland: xorg-x11-server: stack buffer overflow in font alias resolution due to libxfont2 name length mismatch

Which CVE IDs does CVE-2026-50256 cover?

CVE-2026-50256 covers the following CVE IDs: CVE-2026-50256. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2026-50256?

CVE-2026-50256 has a CVSS v3 base score of 7.8, published by Microsoft Security Response Center (MSRC).

CVE-2026-50256HighCVSS 7.8

Xorg-x11-server: xorg-x11-server-xwayland: xorg-x11-server: stack buffer overflow in font alias resolution due to libxfont2 name length mismatch

Vendor

Microsoft Security Response Center (MSRC)

Published

June 9, 2026

Last Modified

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🔗 CVE IDs covered (1)

CVE-2026-50256 →