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Panda3D CVE-2026-22189

MEDIUM
Stack-based Buffer Overflow (CWE-121)
2026-01-07 disclosure@vulncheck.com
6.9
CVSS 4.0
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CVSS VectorNVD

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
X

Lifecycle Timeline

5
Severity Changed
May 26, 2026 - 14:22 NVD
CRITICAL MEDIUM
CVSS changed
May 26, 2026 - 14:22 NVD
9.8 (CRITICAL) 6.9 (MEDIUM)
Analysis Generated
Mar 12, 2026 - 21:54 vuln.today
PoC Detected
Jan 12, 2026 - 17:59 vuln.today
Public exploit code
CVE Published
Jan 07, 2026 - 21:16 nvd
CRITICAL 9.8

DescriptionNVD

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.

AnalysisAI

Panda3D egg-mkfont (through 1.10.16) has a stack buffer overflow via an unbounded sprintf() with attacker-controlled glyph pattern input. PoC available.

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RemediationAI

Within 24 hours: Identify all affected systems and apply vendor patches immediately. If patching is delayed, consider network segmentation to limit exposure.

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CVE-2026-22189 vulnerability details – vuln.today

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