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Fencer Vulns
medium 5.5

CVE-2023-52949 json

Missing authentication for critical function vulnerability in proxy settings functionality in Synology Active Backup for Business Agent bef…

published 2024-09-26 2 y ago modified 2026-06-17 4 mo ago also EUVD-2023-59633

cvss
5.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.2%
EPSS 0.2% chance of exploitation in 30 days, percentile 7%
public exploits
0
none known

Summary

Missing authentication for critical function vulnerability in proxy settings functionality in Synology Active Backup for Business Agent before 2.7.0-3221 allows local users to obtain user credential via unspecified vectors.

Patch / fix

  • Synology Synology Active Backup for Business Agent 2.7.0-3221
  • synology active_backup_for_business_agent 2.7.0-3221

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
2 y ago

Exploit prediction

0.18% chance of exploitation in the next 30 days, higher than 7% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
NVD 3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Affected products

  • Synology Synology Active Backup for Business Agent
  • synology active_backup_for_business_agent

Classification

Weakness
  • CWE-306 Missing Authentication for Critical Functionality

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.