X vulnerabilities
Published CVEs affecting X products: 3 record(s), with severity, exploitation and fixes.
CVE-2026-56003
High · 8.8
CWE-122 Jul 8, 2026
libXfont2 computeProps Property Buffer Heap Buffer Overflow
A heap buffer overflow due to missing size checking in the property buffer when parsing PCF files in libXfont2 ComputeScaledProperties() before libXfont2 before 2.0.8 could be used by attackers using authenticated X clients to execute code within the X server.
CVE-2026-56002
High · 8.8
CWE-122 Jul 8, 2026
libXfont2 PCF Font Parsing Heap Buffer Overflow
A heap bufferflow in pcfReadFont() due to missing glyph bounds checking in libXfont2 before 2.0.8 allows attackers authenticated as X client to execute code within the X server.
CVE-2026-56001
High · 8.8
CWE-122 Jul 8, 2026
libXfont2 BitmapScaleBitmaps Integer Overflow Heap Buffer Overflow
A heap buffer overflow in BitmapScaleBitmaps in libXfont2 before 2.0.8 due to an overflowing 32bit size could be used by attackers able to access the X Server to execute code within the X server cont