Directory Traversal Affecting calibre package, versions <5.12.0+dfsg-1+deb11u4
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-DEBIAN11-CALIBRE-15247984
- published7 Feb 2026
- disclosed6 Feb 2026
Introduced: 6 Feb 2026
CVE-2026-25635 (opens in a new tab)How to fix?
Upgrade Debian:11 calibre to version 5.12.0+dfsg-1+deb11u4 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream calibre package and not the calibre package as distributed by Debian.
See How to fix? for Debian:11 relevant fixed versions and status.
calibre is an e-book manager. Prior to 9.2.0, Calibre's CHM reader contains a path traversal vulnerability that allows arbitrary file writes anywhere the user has write permissions. On Windows (haven't tested on other OS's), this can lead to Remote Code Execution by writing a payload to the Startup folder, which executes on next login. This vulnerability is fixed in 9.2.0.