Is CVE-2022-35866 actively exploited?

No active exploitation of CVE-2022-35866 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2022-35866 be exploited remotely?

Yes. CVE-2022-35866 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2022-35866?

CVE-2022-35866 has a CVSS score of 9.8 (CRITICAL).

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CRITICAL

CVE-2022-35866

CWE-798Published: August 3, 2022· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

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.

NVD Source

Risk Analysis

Vinchin Backup and Recovery uses a hard-coded password for the MySQL administrator account, allowing remote attackers to bypass authentication. This critical flaw grants unauthorized access to the underlying database.

No public exploit is currently known, and it is not in the CISA KEV. The vulnerability is remotely exploitable with low attack complexity.

Recommended Action

Update Vinchin Backup and Recovery to a version that removes hard-coded credentials. Change default administrative passwords immediately upon installation.

Generated by the CTIWATCH analysis pipeline from this CVE's metadata (CVSS, EPSS, KEV status, exploit intelligence). Verify against vendor advisories before acting.

Technical Analysis

CVE-2022-35866 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.