Zen C is a systems programming language that compiles to human-readable GNU C/C11. Prior to version 0.4.4, a stack-based buffer overflow vulnerability in the Zen C compiler allows attackers to cause a compiler crash or potentially execute arbitrary code by providing a specially crafted Zen C source file (`.zc`) with excessively long struct, function, or trait identifiers. Users are advised to update to Zen C version v0.4.4 or later to receive a patch.
History

Thu, 26 Mar 2026 20:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Thu, 26 Mar 2026 19:00:00 +0000

Type Values Removed Values Added
Description Zen C is a systems programming language that compiles to human-readable GNU C/C11. Prior to version 0.4.4, a stack-based buffer overflow vulnerability in the Zen C compiler allows attackers to cause a compiler crash or potentially execute arbitrary code by providing a specially crafted Zen C source file (`.zc`) with excessively long struct, function, or trait identifiers. Users are advised to update to Zen C version v0.4.4 or later to receive a patch.
Title Zen-C has Stack-Based Buffer Overflow in Identifier Mangling
Weaknesses CWE-121
CWE-787
References
Metrics cvssV3_1

{'score': 7.8, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-03-26T19:52:10.550Z

Reserved: 2026-03-20T16:16:48.971Z

Link: CVE-2026-33491

cve-icon Vulnrichment

Updated: 2026-03-26T19:50:33.517Z

cve-icon NVD

Status : Received

Published: 2026-03-26T19:17:04.333

Modified: 2026-03-26T19:17:04.333

Link: CVE-2026-33491

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.