CVE-2026-22189Public exploit

Local process crash via unbounded glyph formatting

Published Jan 7, 2026 · Updated Jan 7, 2026

Stack-based buffer overflow in Panda3D egg-mkfont 1.10.16 and earlier allows local users to crash the utility via a crafted glyph pattern. EggMakeFont::run formats the -gp argument with unbounded sprintf into a 1,024-byte stack buffer without validating its length. Execution requires local invocation of egg-mkfont with a crafted pattern; the demonstrated consequence is a deterministic process crash, while code execution remains environment-dependent.

CVSS severity6.9
Medium
EPSS probability0.51%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack-based buffer overflow in Panda3D egg-mkfont 1.10.16 and earlier allows local users to crash the utility via a crafted glyph pattern. EggMakeFont::run formats the -gp argument with unbounded sprintf into a 1,024-byte stack buffer without validating its length. Execution requires local invocation of egg-mkfont with a crafted pattern; the demonstrated consequence is a deterministic process crash, while code execution remains environment-dependent.

The record

CVE
CVE-2026-22189
Published
Jan 7, 2026
Updated
Jan 7, 2026
Vendor
Panda3D
Product
Panda3D
Classifications
CWE-121, CWE-787, T1499.004
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 7, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 7, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=1.10.16

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Panda3D · Panda3Dversion=0 <=1.10.16

Published CVSS scores

9.8NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
6.9VulnCheckCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-121Stack-based Buffer Overflow
CWE-787Out-of-bounds Write
T1499.004Application or System Exploitation

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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