GZDoom engine allows arbitrary code execution via ZScript actor states

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2025-54065
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2025-12-03 17:15:52 UTC
Updated2026-10-18 17:10:00 UTC
DescriptionGZDoom is a feature centric port for all Doom engine games. GZDoom is an open source Doom engine. In versions 4.14.2 and earlier, ZScript actor state handling allows scripts to read arbitrary addresses, write constants into the JIT-compiled code section, and redirect control flow through crafted FState and VMFunction structures. A script can copy FState structures into a writable buffer, modify function pointers and state transitions, and cause execution of attacker-controlled bytecode, leading to arbitrary code execution.

Risk And Classification

Primary CVSS: v3.1 7.9 HIGH from [email protected]

CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N

EPSS: 0.001370000 probability, percentile 0.028090000 (date 2026-10-18)

Problem Types: CWE-913 | CWE-913 CWE-913: Improper Control of Dynamically-Managed Code Resources

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary7.9HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N
3.1CNADECLARED7.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
Required
Scope
Changed
Confidentiality
High
Integrity
High
Availability
None

CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA ZDoom Gzdoom affected <= 4.14.2 Not specified

References

ReferenceSourceLinkTags
github.com/ZDoom/gzdoom/security/advisories/GHSA-prhc-chfw-32jg [email protected] github.com
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