Out-of-bounds Read Affecting 7zip package, versions [19.00,26.01)
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
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-7ZIP-17192411
- published5 Jun 2026
- disclosed5 Jun 2026
- creditJaroslav Lobačevski
Introduced: 5 Jun 2026
NewCVE-2026-48103 (opens in a new tab)How to fix?
Upgrade 7zip to version 26.01 or higher.
Overview
Affected versions of this package are vulnerable to Out-of-bounds Read via the GetSecurity() function in the WIM archive handler when processing a crafted WIM file. An attacker can cause a denial of service or potentially obtain minor information disclosure by supplying a specially crafted archive with a manipulated securityId field.