Get a Demo

Let's Patch It!

Book a short call with one our specialists, we'll walk you through how Endor Patches work, and ask you a few questions about your environment (like your primary programming languages and repository management). We'll also send you an email right after you fill out the form, feel free to reply with any questions you have in advance!

CVE

CVE-2026-33491

Zen-C has Stack-Based Buffer Overflow in Identifier Mangling
Back to all
CVE

CVE-2026-33491

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

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.

Package Versions Affected

Package Version
patch Availability
No items found.

Automatically patch vulnerabilities without upgrading

Fix Without Upgrading
Detect compatible fix
Apply safe remediation
Fix with a single pull request

CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
7.8
-
3.1
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
C
H
U
0
-
3.1
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
C
H
U
-

Related Resources

No items found.

References

https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/33xxx/CVE-2026-33491.json, https://github.com/zenc-lang/zenc/security/advisories/GHSA-rv74-w6q7-h8xr, https://nvd.nist.gov/vuln/detail/CVE-2026-33491

Severity

7.8

CVSS Score
0
10

Basic Information

Ecosystem
Base CVSS
7.8
EPSS Probability
0.00008%
EPSS Percentile
0.0071%
Introduced Version
0
Fix Available
5ec697eecc95aeb702902e8838bcd6711ecafeaf

Fix Critical Vulnerabilities Instantly

Secure your app without upgrading.
Fix Without Upgrading