Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Zenc-Lang | Zen C | < 0.4.4 |
Related Weaknesses (CWE)
References
- https://github.com/zenc-lang/zenc/security/advisories/GHSA-rv74-w6q7-h8xrExploitMitigationVendor Advisory
FAQ
What is CVE-2026-33491?
CVE-2026-33491 is a vulnerability with a CVSS score of 7.8 (HIGH). 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...
How severe is CVE-2026-33491?
CVE-2026-33491 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-33491?
Check the references section above for vendor advisories and patch information. Affected products include: Zenc-Lang Zen C.