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.
History

Fri, 07 Nov 2025 23:30:00 +0000

Type Values Removed Values Added
Description 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.
Title calibre is vulnerable to arbitrary code execution when opening FB2 files
Weaknesses CWE-73
References
Metrics cvssV4_0

{'score': 9.3, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2025-11-07T23:25:55.996Z

Updated: 2025-11-07T23:25:55.996Z

Reserved: 2025-11-05T19:12:25.102Z

Link: CVE-2025-64486

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2025-11-08T00:15:36.170

Modified: 2025-11-08T00:15:36.170

Link: CVE-2025-64486

cve-icon Redhat

No data.