{"id":"CVE-2026-22189","title":"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","summary":"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-…","severity":"critical","cvss":9.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","cwe":["CWE-121","CWE-787"],"vendor":"cmu","product":"panda3d","affected":["panda3d <= 1.10.16"],"published":"2026-01-07","updated":"2026-07-14","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-22189","references":[{"url":"https://github.com/panda3d/panda3d","label":"disclosure@vulncheck.com"},{"url":"https://seclists.org/fulldisclosure/2026/Jan/10","label":"disclosure@vulncheck.com"},{"url":"https://www.panda3d.org/","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/panda3d-egg-mkfont-stack-buffer-overflow","label":"disclosure@vulncheck.com"}],"tags":["nvd"],"epss":0.00507,"epssPercentile":0.42134,"ingestedAt":"2026-07-15T13:44:03.822Z","slug":"CVE-2026-22189","body":"## Overview\n\nThe 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.\n\n## Affected\n\n- `panda3d <= 1.10.16`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":54,"depthScoreParts":{"impact":53.9,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}