Quick answers
- Is CVE-2026-22189 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-22189 being exploited in the wild.
- How severe is CVE-2026-22189?
- Critical severity, with a CVSS score of 9.8, published 7 January 2026.
- Which products and versions are affected?
- Panda3D Panda3D up to and including 1.10.16.
- Is there a fix for CVE-2026-22189?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-22189 attacked?
- It is attacked with local access, in a software library.
- Am I affected by CVE-2026-22189?
- Check whether you run Cmu Panda3d. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
A stack-based buffer overflow exists in the egg-mkfont utility of Panda3D (<= 1.10.16) within the EggMakeFont::make_tref function. The vulnerability is caused by the use of an unbounded sprintf() call that copies a user-controlled glyph pattern string (provided via the -gp command-line argument) into a fixed-size 1024-byte stack buffer without length validation. An attacker can exploit this by providing an excessively long string, leading to memory corruption and a deterministic crash. Depending on the build environment and presence of stack protections, this may be leveraged for arbitrary code execution. The issue was disclosed in January 2026.
Affected products
- Panda3D Panda3D up to and including 1.10.16
Timeline
- 2026-01-01: disclosed: Initial disclosure on Full Disclosure mailing list
- 2026-01-07: advisory: NVD and VulnCheck published advisory data