CVE-2026-33491 HIGH

CVE-2026-33491: Zen-C has Stack-Based Buffer Overflow in Identifier Mangling

Vendor Zenc-Lang
Product zenc
Weakness CWE-121
Published March 26, 2026
Last update March 27, 2026
View on NVD All CVEs

CVSS base score

7.8/10
Attack vector Local
Attack complexity Low
Privileges required None
User interaction Required
Confidentiality High
Integrity High

CVSS vector

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

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

March 26, 2026 CVE published
March 27, 2026 Record updated