CVE-2025-64486: calibre is vulnerable to arbitrary code execution when opening FB2 files
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.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2025-64486?
CVE-2025-64486 has a high severity rating due to its capability to allow arbitrary file writing on the filesystem.
How do I fix CVE-2025-64486?
To fix CVE-2025-64486, upgrade Calibre to version 8.14.0 or later.
What types of files are affected by CVE-2025-64486?
CVE-2025-64486 specifically affects binary assets in FB2 files handled by Calibre.
Can CVE-2025-64486 be exploited remotely?
Yes, an attacker can exploit CVE-2025-64486 remotely by tricking a user into viewing or converting a malicious FictionBook file.
What versions of Calibre are vulnerable to CVE-2025-64486?
Calibre versions 8.13.0 and prior are vulnerable to CVE-2025-64486.