Home

Description

Panda3D versions up to and including 1.10.16 egg-mkfont 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.

PUBLISHED Reserved 2026-01-06 | Published 2026-01-07 | Updated 2026-01-07 | Assigner VulnCheck




MEDIUM: 6.9CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Problem types

CWE-121 Stack-based Buffer Overflow

Product status

Default status
unaffected

Any version
affected

Credits

Ron Edgerson finder

References

seclists.org/fulldisclosure/2026/Jan/10 technical-description exploit

www.panda3d.org/ product

github.com/panda3d/panda3d product

www.vulncheck.com/...anda3d-egg-mkfont-stack-buffer-overflow third-party-advisory

cve.org (CVE-2026-22189)

nvd.nist.gov (CVE-2026-22189)

Download JSON