CVE-2026-22189 Panda3D <= 1.10.16 egg-mkfont Stack Buffer Overflow
Attacker can trigger stack buffer overflow in Panda3D egg-mkfont via long glyph patterns, potentially causing crashes or arbitrary code execution.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-22189?
CVE-2026-22189 is a medium-severity memory corruption vulnerability in Panda3D, published on 7 Jan 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
The egg-mkfont utility in Panda3D versions up to and including 1.10.16 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.
Which versions are affected by CVE-2026-22189?
It affects 1 product.
Products include Cmu Panda3d.
How do I fix CVE-2026-22189?
No fix has been published for CVE-2026-22189 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-22189 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-22189 exists.
Other vulnerabilities in Panda3D
Sources
Also known as GHSA-gwg6-62mc-7h63.