CVE-2026-33491

HIGH 7.8CVE-2026-33491 · Published 26/03/2026 · updated 17/06/2026

In short

CVE-2026-33491 is a HIGH (CVSS 7.8) vulnerability affecting zen c (zenc-lang).
Chance of exploitation in the next 30 days (EPSS): 0.24%, higher than 15.6% of all vulnerabilities.
Fix: update to 0.4.4 or later.

Package	Affected versions	Patched versions
zen c zenc-lang	`< 0.4.4`	`0.4.4`

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.

References

zenc-lang/zenc security advisory · Exploit

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