CVE-2026-22189

9.8 CRITICAL
Published: January 07, 2026 Modified: January 12, 2026
View on NVD

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.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://github.com/panda3d/panda3d
Source: disclosure@vulncheck.com
Product
https://seclists.org/fulldisclosure/2026/Jan/10
Source: disclosure@vulncheck.com
Exploit Mailing List Third Party Advisory
https://www.panda3d.org/
Source: disclosure@vulncheck.com
Product
https://www.vulncheck.com/advisories/panda3d-egg-mkfont-stack-buffer-overflow
Source: disclosure@vulncheck.com
Third Party Advisory

4 reference(s) from NVD

Quick Stats

CVSS v3 Score
9.8 / 10.0
EPSS (Exploit Probability)
0.1%
32th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

Affected Vendors

cmu