CVE-2025-64486

published 2025-11-08

CVE-2025-64486: 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…

Priority P3 45 critical 9.3 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 E X CR X IR X AR X MAV X MAC X MAT X MPR X MUI X MVC X MVI X MVA X MSC X MSI X MSA X S X AU X R X V X RE X U X

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

5 ranges

Vendor	Product	Version range	Fixed in
debian	calibre	< calibre 6.13.0+repack-2+deb12u5 (bookworm)	calibre 6.13.0+repack-2+deb12u5 (bookworm)
kovidgoyal	calibre	< 8.14.0	8.14.0
kovidgoyal	calibre	>= 0 < 6.13.0+repack-2+deb12u5	6.13.0+repack-2+deb12u5
kovidgoyal	calibre	>= 0 < 8.5.0+ds-1+deb13u1	8.5.0+ds-1+deb13u1
kovidgoyal	calibre	>= 0 < 8.14.0+ds+~0.10.5-1	8.14.0+ds+~0.10.5-1

CVSS provenance

nvd v4.0 9.3 CRITICAL 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

osv 9.3 CRITICAL

vendor_debian 9.3 CRITICAL

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CWE-73