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.
History

Mon, 12 Jan 2026 18:00:00 +0000

Type Values Removed Values Added
First Time appeared Cmu
Cmu panda3d
Weaknesses CWE-787
CPEs cpe:2.3:a:cmu:panda3d:*:*:*:*:*:*:*:*
Vendors & Products Cmu
Cmu panda3d
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}


Thu, 08 Jan 2026 10:00:00 +0000

Type Values Removed Values Added
First Time appeared Panda3d
Panda3d panda3d
Vendors & Products Panda3d
Panda3d panda3d

Wed, 07 Jan 2026 22:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Wed, 07 Jan 2026 20:45:00 +0000

Type Values Removed Values Added
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.
Title Panda3D <= 1.10.16 egg-mkfont Stack Buffer Overflow
Weaknesses CWE-121
References
Metrics cvssV4_0

{'score': 6.9, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published: 2026-01-07T20:25:37.702Z

Updated: 2026-01-07T21:21:35.370Z

Reserved: 2026-01-06T16:47:17.183Z

Link: CVE-2026-22189

cve-icon Vulnrichment

Updated: 2026-01-07T21:21:26.312Z

cve-icon NVD

Status : Analyzed

Published: 2026-01-07T21:16:03.067

Modified: 2026-01-12T17:59:18.370

Link: CVE-2026-22189

cve-icon Redhat

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