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-17232150
- published8 Jun 2026
- disclosed5 Jun 2026
- creditJaroslav Lobačevski
Introduced: 5 Jun 2026
NewCVE-2026-48092 (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 in the SquashFS ReadBlock() function. An attacker can cause disclosure of heap memory contents by providing a specially crafted SquashFS archive with a manipulated node.Offset value, which bypasses fragment bounds checks and results in out-of-bounds memory being read into the extracted file. This is only exploitable if the application is built for a 32-bit environment where size_t is 32 bits.