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TI-2020-16768 Aliases CVE-2020-27653GHSA-8wh4-6822-h89q

Broken or risky cryptographic algorithm in Synology Router Manager

Priority LOW 38CWE-327Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
High
Impact type
Information disclosure
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-327.

Summary

Algorithm downgrade vulnerability in QuickConnect in Synology Router Manager (SRM) before 1.2.4-8081 allows man-in-the-middle attackers to spoof servers and obtain sensitive information via unspecified vectors.

Why it matters now

EPSS 0.00832 57th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed Synology Router Manager (SRM) (Synology): 1.2.4-8081

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
SynologySynology Router Manager (SRM)before 1.2.4-80811.2.4-8081Patch availableCNA
  • Synology Router Manager (SRM) VendorSynology Affected before 1.2.4-8081 Fixed in 1.2.4-8081 Patch available CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:synology:router_manager:*:*:*:*:*:*:*:*1.2 to before 1.2.4-8081VulnerableSynology
cpe:2.3:o:synology:diskstation_manager:6.2.3_25426:*:*:*:*:*:*:*6.2.3_25426VulnerableSynology
  • cpe:2.3:a:synology:router_manager:*:*:*:*:*:*:*:* Versions 1.2 to before 1.2.4-8081 Vulnerable ·Synology
  • cpe:2.3:o:synology:diskstation_manager:6.2.3_25426:*:*:*:*:*:*:* Versions 6.2.3_25426 Vulnerable ·Synology

Remediation

  • Fix · CNA Synology Router Manager (SRM) (Synology) Fixed in 1.2.4-8081

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    Synology Router Manager (SRM) 1.2.4-8081

    7 records Highest priority Priority MEDIUM 3 MEDIUM, 4 LOW

    Other records, highest priority first

    • TI-2020-16769 Improper privilege management in Synology Router ManagerPriority MEDIUM 50
    • TI-2020-16770 Improper privilege management in Synology Router ManagerPriority MEDIUM 46
    • TI-2020-16764 Improper certificate validation in Synology Router ManagerPriority MEDIUM 40
    Show all 7 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2020-27653
  2. 2026-10-03 Alias added: GHSA-8wh4-6822-h89q

References

Exploit 1

Advisory 1

  • TI-2021-02242 Sudo before 1.9.5p2 contains an off-by-one error that can result in a heap-based buffer… KEVCVSS 3.1HIGH 7.8
  • TI-2018-01076 Out-of-bounds write in Netatalk CVSS 3.1CRITICAL 9.8
  • TI-2017-10594 Heap-based buffer overflow in dnsmasq before 2.78 allows remote attackers to cause a… CVSS 3.1CRITICAL 9.8
  • TI-2013-05716 webman/imageSelector.cgi in Synology DiskStation Manager (DSM) 4.0 before 4.0-2259, 4.2… CVSS 2.0HIGH 10.0
  • TI-2021-19843 Out-of-bounds read in Samba CVSS 3.1HIGH 8.8
  • TI-2017-11636 Command injection in Synology DiskStation Manager CVSS 3.0HIGH 8.8
See all 96 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences