CVE-2026-22189
CriticalCVSS 9.8Exploitation Probability (EPSS)
Low risk35th percentile - higher than 35% of all known CVEs
Summary
The egg-mkfont utility in Panda3D up to version 1.10.16 contains a stack-based buffer overflow vulnerability due to an unbounded sprintf() call with attacker-controlled input. When constructing glyph filenames, egg-mkfont formats a user-supplied glyph pattern (-gp) into a fixed-size stack buffer without length validation.
Risk Assessment
Supplying an excessively long glyph pattern string can overflow the stack buffer, resulting in memory corruption and a deterministic crash. Depending on build configuration and execution environment, the overflow may be exploitable for arbitrary code execution, posing a significant risk to the organization.
Recommendation
Immediately update Panda3D to version 1.10.17 or later, which includes a fix for this vulnerability. If an update is not possible, restrict access to the egg-mkfont utility to trusted users only.
Original NVD description (English source)
The egg-mkfont utility in Panda3D versions up to and including 1.10.16 contains a stack-based buffer overflow vulnerability due to use of an unbounded sprintf() call with attacker-controlled input. When constructing glyph filenames, egg-mkfont formats a user-supplied glyph pattern (-gp) into a fixed-size stack buffer without length validation. Supplying an excessively long glyph pattern string can overflow the stack buffer, resulting in memory corruption and a deterministic crash. Depending on build configuration and execution environment, the overflow may also be exploitable for arbitrary code execution.