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
Published May 9, 2019
7.1
HIGHCVSS 3.0
EPSS 0.48%
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
No data.
- 3.3.15
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
AV:L/AC:L/Au:N/C:P/I:P/A:N
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Table of values (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.48% (0.00478) | 38.94th | v5 (v2026.06.15) |
| Sep 20, 2026 | 0.48% (0.00478) | 40.39th | v5 (v2026.06.15) |
| Jul 20, 2024 | 0.07% (0.00071) | 31.34th | v3 (v2023.03.01) |
| May 2, 2024 | 0.07% (0.00071) | 29.89th | v3 (v2023.03.01) |
| Nov 8, 2023 | 0.07% (0.00065) | 27.45th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.06% (0.00060) | 23.18th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.89% (0.00890) | 30.33th | v2 (v2022.01.01) |
| Feb 4, 2022 | 0.89% (0.00890) | 12.04th | v2 (v2022.01.01) |
| Feb 3, 2022 | 0.83% (0.00833) | 24.58th | v5 (v2026.06.15) |
| Apr 14, 2021 | 0.83% (0.00833) | 0.00th | v1 |
References (3)
- http://archive.is/eF2GR x_refsource_MISCExploitThird Party Advisory
- https://github.com/qbittorrent/qBittorrent/wiki/I-forgot-my-UI-lock-password x_refsource_MISC
- https://medium.com/%40BaYinMin/cve-2017-12778-qbittorrent-ui-lock-authentication-bypass-30959ff55ada x_refsource_MISC
| Link | Providers | Tags |
|---|---|---|
| http://archive.is/eF2GR | x_refsource_MISCExploitThird Party Advisory | |
| https://github.com/qbittorrent/qBittorrent/wiki/I-forgot-my-UI-lock-password | x_refsource_MISC | |
| https://medium.com/%40BaYinMin/cve-2017-12778-qbittorrent-ui-lock-authentication-bypass-30959ff55ada | x_refsource_MISC |
Change history (0)
No recorded changes yet.