CVE-2026-55999

Local attackers with a X connection able to provide PCX fonts to the X server xorg-server before 21.2.24 and xwayland before 24.1.13 could cause a heap buffer overflow via SetFont due to missing glyph boundary checks...

CVE-2026-56002

The CVE-2026-56002 entry describes a heap buffer overflow in libXfont2’s PCF font parsing (pcfReadFont) due to missing glyph bounds checking, affecting libXfont2 before 2.0.8. An authenticated X client could potentially execute code in the X server. The provided metrics indicate a HIGH severity (...

CVE-2026-56002 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-2026-56002 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...

EUVD-2026-42211

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-2026-56002

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-2026-55999

Local attackers with a X connection able to provide PCX fonts to the X server xorg-server before 21.2.24 and xwayland before 24.1.13 could cause a heap buffer overflow via SetFont due to missing glyph boundary checks...

CVE-2026-55999 xorg-server / xwayland glamor font atlas Heap Buffer Overflow

Local attackers with a X connection able to provide PCX fonts to the X server xorg-server before 21.2.24 and xwayland before 24.1.13 could cause a heap buffer overflow via SetFont due to missing glyph boundary checks...

PT-2026-56334

Name of the Vulnerable Software and Affected Versions xorg-server versions prior to 21.2.24 xwayland versions prior to 24.1.13 Description Local attackers with an X connection can cause a heap buffer overflow by providing PCX fonts to the X server. This occurs due to missing glyph boundary checks...

PT-2026-67271

Name of the Vulnerable Software and Affected Versions FreeRDP versions prior to 3.29.0 Description A heap out-of-bounds read exists in the update process glyph fragments and glyph cache fragment put functions within libfreerdp/cache/glyph.c. The issue occurs during the handling of a GLYPH FRAGMEN...

PT-2026-61023

Name of the Vulnerable Software and Affected Versions FreeRDP affected versions not specified Description FreeRDP contains security issues that could allow an attacker to obtain sensitive information, cause a denial of service by crashing the application, or execute arbitrary code. This includes ...

PYSEC-2026-2253

Pillow is a Python imaging library. Prior to 12.3.0, PIL/PcfFontFile.py loadbitmaps read glyph dimensions from the PCF METRICS section and passed them directly to Image.frombytes without calling Image.decompressionbombcheck, allowing crafted PCF font data to cause excessive memory allocation. Thi...

PYSEC-2026-2254

Pillow is a Python imaging library. Prior to 12.3.0, PIL/FontFile.py FontFile.compile assembled per-glyph images into a combined bitmap with Image.new"1", xsize, ysize without calling Image.decompressionbombcheck, allowing a font to trigger excessive allocation during conversion or saving. This...

UBUNTU-CVE-2026-54060

Pillow is a Python imaging library. Prior to 12.3.0, PIL/FontFile.py FontFile.compile assembled per-glyph images into a combined bitmap with Image.new"1", xsize, ysize without calling Image.decompressionbombcheck, allowing a font to trigger excessive allocation during conversion or saving. This...

CVE-2026-54059

Pillow is a Python imaging library. Prior to 12.3.0, PIL/PcfFontFile.py loadbitmaps read glyph dimensions from the PCF METRICS section and passed them directly to Image.frombytes without calling Image.decompressionbombcheck, allowing crafted PCF font data to cause excessive memory allocation. Thi...

freerdp security update

2:2.11.7-7.3 - Lock appWindow to fix use-after-free in RAIL mode CVE-2026-25952 Resolves: RHEL-159860 2:2.11.7-7.2 - Fix double free in xfrailwindowcommon cleanup CVE-2026-26986 - Fix growth of preallocated buffers CVE-2026-27951 - Fix heap-buffer-overflow in bitmapcacheput CVE-2026-29775 - Add D...

Astra Linux – Vulnerability found in Linux 6.12, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: fbdev: bitblit: In the bitPutcs function, the bound-check glyph index was derived from the character value masked by 0xff or 0x1ff. This may lead to reading beyond the end of the built-in font array, exceeding the actual number o...

📄 FreeType SHZ 2.14.3 Heap Buffer Overflow

This Python proof of concept framework is designed for security research into a reported heap buffer overflow condition affecting the FreeType TrueType bytecode interpreter. The code constructs specially crafted font structures intended to exercise the SHZ instruction path, generates malformed...

FreeType Experimental TrueType Glyph Construction

This Python code outlines an experimental framework for constructing synthetic TrueType font structures intended for studying parser behavior, glyph-processing logic, and edge-case handling within font-rendering pipelines...

Font Generator for Embedded Bitmap and Color Glyph Pipeline Robustness Testing

This Python program constructs a handcrafted TrueType font file that combines multiple font subsystems - including embedded bitmap tables, color glyph definitions, glyph mapping structures, and minimal layout metadata - into a single synthetic test artifact...