This vulnerability allows remote attackers to bypass authentication on affected installations of Vinchin Backup and Recovery 6.5.0.17561.

published 2022-08-03 4y ago modified 2026-06-17 4mo ago also EUVD-2022-38739

cvss: 9.8; version 3.0, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 4.7%; EPSS 4.7% chance of exploitation in 30 days, percentile 91%
public exploits: 0; none known

This vulnerability allows remote attackers to bypass authentication on affected installations of Vinchin Backup and Recovery 6.5.0.17561. Authentication is not required to exploit this vulnerability. The specific flaw exists within the configuration of the MySQL server. The server uses a hard-coded password for the administrator user. An attacker can leverage this vulnerability to bypass authentication on the system. Was ZDI-CAN-17139.

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CISA SSVC

Exploitation: none
Automatable: yes
Technical impact: total
Assessed: last yr. (2024-11-20)

Exploit prediction

4.72% chance of exploitation in the next 30 days, higher than 91% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
CNA	3.0	9.8	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD	3.1	9.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Vinchin Backup and Recovery

Classification

Weakness

CWE-798 Use of Hard-coded Credentials

References

zerodayinitiative.com /advisories/ZDI-22-959/
third-party-advisory, vdb-entry
seclists.org /fulldisclosure/2024/Jan/30
mailing-list
packetstormsecurity.com /files/176794/Vinchin-Backup-And-Recovery-7.2-Default-MySQL-Credentials.html

Sources

CVE List CVE-2022-35866
NVD CVE-2022-35866

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