CVE-2026-22188

low-risk
Published 2026-01-07

Panda3D versions up to and including 1.10.16 deploy-stub contains a denial of service vulnerability due to unbounded stack allocation. The deploy-stub executable allocates argv_copy and argv_copy2 using alloca() based directly on the attacker-controlled argc value without validation. Supplying a large number of command-line arguments can exhaust stack space and propagate uninitialized stack memory into Python interpreter initialization, resulting in a reliable crash and undefined behavior.

Do I need to act?

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0.02% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
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Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
5
CVSS 5.5/10 Medium
LOCAL / LOW complexity

Affected Products (1)

Panda3D

Affected Vendors

Cmu

References (4)

Product https://github.com/panda3d/panda3d
Exploit https://seclists.org/fulldisclosure/2026/Jan/9
Product https://www.panda3d.org/
Third Party Advisory https://www.vulncheck.com/advisories/panda3d-deploy-stub-stack-exhaustion-via-un...
23
/ 100
low-risk
Severity 18/34 · Moderate
Exploitability 0/34 · Minimal
Exposure 5/34 · Minimal