CVE-2025-64486

critical · 9.3

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.

9.3

CVSS

0.2%

EPSS (exploit prob.)

8th

EPSS percentile

2025-11-08

Published

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

Weaknesses

CWE-73

References

https://github.com/kovidgoyal/calibre/commit/6f94bce214bf7d43c829804db3741afa5e83c0c5
https://github.com/kovidgoyal/calibre/security/advisories/GHSA-hpwq-c98h-xp8g

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2025-64486