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CVE-2026-33491

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.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:6e760d5f0cbb78ca1cef771a2bce6c55d06bd61d2455d8b52ce063dcc5b3cde9
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 2 assertions

{"cweId":"CWE-121","description":"CWE-121: Stack-based Buffer Overflow","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:5a76d11fda1350e099c1152048d9da0d3e188de377335fd8c42367c75c6397d3 · sha256:6d8cd38ee65ab8e6… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-787","description":"CWE-787: Out-of-bounds Write","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:5a76d11fda1350e099c1152048d9da0d3e188de377335fd8c42367c75c6397d3 · sha256:6d8cd38ee65ab8e6… · /containers/cna/problemTypes/1/descriptions/0

Affected products and versions

1 source assertion
{"product":"zenc","vendor":"zenc-lang","versions":[{"status":"affected","version":"< 0.4.4"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:5a76d11fda1350e099c1152048d9da0d3e188de377335fd8c42367c75c6397d3 · sha256:6d8cd38ee65ab8e6… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"LOCAL","availabilityImpact":"HIGH","baseScore":7.8,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:5a76d11fda1350e099c1152048d9da0d3e188de377335fd8c42367c75c6397d3 · sha256:6d8cd38ee65ab8e6… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

2 source assertions
{"cweId":"CWE-121","description":"CWE-121: Stack-based Buffer Overflow","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:5a76d11fda1350e099c1152048d9da0d3e188de377335fd8c42367c75c6397d3 · sha256:6d8cd38ee65ab8e6… · /containers/cna/problemTypes/0/descriptions/0
{"cweId":"CWE-787","description":"CWE-787: Out-of-bounds Write","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:5a76d11fda1350e099c1152048d9da0d3e188de377335fd8c42367c75c6397d3 · sha256:6d8cd38ee65ab8e6… · /containers/cna/problemTypes/1/descriptions/0

Source references

1 source assertion
{"name":"https://github.com/zenc-lang/zenc/security/advisories/GHSA-rv74-w6q7-h8xr","tags":["x_refsource_CONFIRM"],"url":"https://github.com/zenc-lang/zenc/security/advisories/GHSA-rv74-w6q7-h8xr"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:5a76d11fda1350e099c1152048d9da0d3e188de377335fd8c42367c75c6397d3 · sha256:6d8cd38ee65ab8e6… · /containers/cna/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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