External Control of File Name or Path Affecting calibre package, versions <8.14.0+ds+~0.10.5-1
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.
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applications- Snyk IDSNYK-DEBIANUNSTABLE-CALIBRE-13863866
- published9 Nov 2025
- disclosed8 Nov 2025
Introduced: 8 Nov 2025
CVE-2025-64486 (opens in a new tab)How to fix?
Upgrade Debian:unstable calibre to version 8.14.0+ds+~0.10.5-1 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:unstable relevant fixed versions and status.
calibre is an e-book manager. In versions 8.13.0 and prior, calibre does not validate filenames when handling binary assets in FB2 files, allowing an attacker to write arbitrary files on the filesystem when viewing or converting a malicious FictionBook file. This can be leveraged to achieve arbitrary code execution. This issue is fixed in version 8.14.0.