CVE-2023-52949

Local credential disclosure via unauthenticated proxy settings

Published Sep 26, 2024 · Updated Nov 15, 2024

Missing authentication in Synology Active Backup for Business Agent before 2.7.0-3221 allows local users to obtain proxy credentials. The proxy settings functionality fails to authenticate a critical operation, but Synology has not disclosed the operation or credential-access vector. A local low-privileged account is required, and successful exploitation discloses stored user credentials without altering data or service availability.

CVSS severity5.5
Medium
EPSS probability0.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authentication in Synology Active Backup for Business Agent before 2.7.0-3221 allows local users to obtain proxy credentials. The proxy settings functionality fails to authenticate a critical operation, but Synology has not disclosed the operation or credential-access vector. A local low-privileged account is required, and successful exploitation discloses stored user credentials without altering data or service availability.

The record

CVE
CVE-2023-52949
Published
Sep 26, 2024
Updated
Nov 15, 2024
Vendor
Synology
Product
Synology Active Backup for Business Agent
Classifications
CWE-306
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 26, 2024CVE publishedPublication date reported by the CVE source.
  2. Nov 15, 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?

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  1. Affected versionversion=* <2.7.0-3221

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Synology · Synology Active Backup for Business Agentversion=* <2.7.0-3221
Synology · Active Backup for Business Agentversion=0 <2.7.0-3221

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
5.5Synology Inc.CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

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)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-306Missing Authentication for Critical Function

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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