X vulnerabilities
We track 3 vulnerabilities in X products. 3 are rated high or critical, and none are known to be exploited. The most recent was published on July 8, 2026.
Latest X vulnerabilities
- 8.8 High severity
libXfont2: Heap-based 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.
- 8.8 High severity
libXfont2: Heap-based 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.
- 8.8 High severity
libXfont2: Heap-based 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