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.
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Thu, 13 Nov 2025 22:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Mon, 10 Nov 2025 09:45:00 +0000

Type Values Removed Values Added
First Time appeared Kovidgoyal
Kovidgoyal calibre
Vendors & Products Kovidgoyal
Kovidgoyal calibre

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'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2025-11-13T21:34:23.230Z

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

Link: CVE-2025-64486

cve-icon Vulnrichment

Updated: 2025-11-13T21:34:19.257Z

cve-icon NVD

Status : Awaiting Analysis

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

Modified: 2025-11-12T16:20:22.257

Link: CVE-2025-64486

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2025-11-10T09:33:43Z

Weaknesses