Vulnerabilities
Vulnerable Software

Vulnerability Details CVE-2026-25635

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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.001
EPSS Ranking 18.3%
CVSS Severity
CVSS v3 Score 8.6
Products affected by CVE-2026-25635


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