CVE-2022-35866Network attack vector

Unauthenticated database access via hard-coded administrator password

Published Aug 3, 2022 · Updated Nov 20, 2024

Authentication bypass in Vinchin Backup & Recovery 6.5.0.17561 allows remote attackers to access its MySQL administrator account. The bundled MySQL server configuration assigns the same hard-coded password to the administrator user, so supplied credentials are accepted instead of installation-specific secrets. Network reachability to the MySQL service is sufficient; successful access grants administrator-level control over the product database.

CVSS severity9.8
Critical
EPSS probability4.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication bypass in Vinchin Backup & Recovery 6.5.0.17561 allows remote attackers to access its MySQL administrator account. The bundled MySQL server configuration assigns the same hard-coded password to the administrator user, so supplied credentials are accepted instead of installation-specific secrets. Network reachability to the MySQL service is sufficient; successful access grants administrator-level control over the product database.

The record

CVE
CVE-2022-35866
Published
Aug 3, 2022
Updated
Nov 20, 2024
Vendor
Vinchin
Product
Vinchin Backup & Recovery
Classifications
CWE-798, T1078.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 3, 2022CVE publishedPublication date reported by the CVE source.
  2. Nov 20, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=6.5.0.17561

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Vinchin · Vinchin Backup & Recoveryversion=6.5.0.17561

Published CVSS scores

9.8Zero Day InitiativeCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-798Use of Hard-coded Credentials
T1078.001Valid Accounts: Default Accounts

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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