Panda3d
CVE-2026-22189
MEDIUM
Severity by source
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
Primary rating from NVD · only source for this CVE.
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
Lifecycle Timeline
5DescriptionCVE.org
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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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | egg-mkfont tool from Panda3D versions ≤1.10.16 must be invoked by attacker with ability to provide command-line arguments; -gp (glyph pattern) parameter accepts attacker-controlled input without length validation. Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | CVSS 9.8 (Critical). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker provides a game asset package containing instructions to run egg-mkfont with a long glyph pattern. The stack overflow executes shellcode in the developer's environment. |
| Remediation | Update Panda3D when a patch is available. … Detailed patch versions, workarounds, and compensating controls in full report. |
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External POC / Exploit Code
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