CVE-2017-12778

Severity: high (CVSS 7.1 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2019-05-09 · updated 2026-06-17
Weakness: CWE-287

Description

The UI Lock feature in qBittorrent version 3.3.15 is vulnerable to Authentication Bypass, which allows Attack to gain unauthorized access to qBittorrent functions by tampering the affected flag value of the config file at the C:\Users\<username>\Roaming\qBittorrent pathname. The attacker must change the value of the "locked" attribute to "false" within the "Locking" stanza. NOTE: This is an intended behavior. See https://github.com/qbittorrent/qBittorrent/wiki/I-forgot-my-UI-lock-password

Affected products

qBittorrent client: 3.3.15

References

http://archive.is/eF2GR
https://github.com/qbittorrent/qBittorrent/wiki/I-forgot-my-UI-lock-password
https://medium.com/%40BaYinMin/cve-2017-12778-qbittorrent-ui-lock-authentication-bypass-30959ff55ada
http://archive.is/eF2GR
https://github.com/qbittorrent/qBittorrent/wiki/I-forgot-my-UI-lock-password
https://medium.com/%40BaYinMin/cve-2017-12778-qbittorrent-ui-lock-authentication-bypass-30959ff55ada

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