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…
Published: 2025-11-07 · CVSS: 9.3 · CVSS 4.0
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7