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High · 7.8 CVE-2026-33491 EUVD-2026-16319

Zen-C has Stack-Based Buffer Overflow in Identifier Mangling

Published Mar 26, 2026 · Updated Mar 27, 2026 · Assigned by GitHub_M

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.

Affected products

VendorProductAffectedFixed
zenc-lang zenc < 0.4.4 —

References