CVE-2026-25635

8.6 HIGH
Published: February 06, 2026 Modified: February 17, 2026
View on NVD

Description

calibre is an e-book manager. Prior to 9.2.0, Calibre's CHM reader contains a path traversal vulnerability that allows arbitrary file writes anywhere the user has write permissions. On Windows (haven't tested on other OS's), this can lead to Remote Code Execution by writing a payload to the Startup folder, which executes on next login. This vulnerability is fixed in 9.2.0.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://github.com/kovidgoyal/calibre/security/advisories/GHSA-32vh-whvh-9fxr
Source: security-advisories@github.com
Exploit Third Party Advisory
https://0x5t.raptx.org/posts/calibre-chm-rce
Source: af854a3a-2127-422b-91ae-364da2661108
Exploit Third Party Advisory

3 reference(s) from NVD

Quick Stats

CVSS v3 Score
8.6 / 10.0
EPSS (Exploit Probability)
0.1%
24th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

Affected Vendors

calibre-ebook