Out-of-bounds Write Affecting libarchive package, versions [0,]
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-CONAN-LIBARCHIVE-15916800
- published6 Apr 2026
- disclosed30 Mar 2026
- creditElhanan Haenel
Introduced: 30 Mar 2026
NewCVE-2026-5121 (opens in a new tab)How to fix?
A fix was pushed into the master branch but not yet published.
Overview
Affected versions of this package are vulnerable to Out-of-bounds Write through the zisofs process in ISO9660 image handling on 32-bit systems. An attacker can potentially execute arbitrary code by supplying a specially crafted ISO9660 image that triggers an integer overflow, leading to a heap buffer overflow.
Workaround
This vulnerability can be mitigated by avoiding processing of untrusted ISO9660 images and by extracting or reading content only from ISO images obtained from trusted sources.