CVE-2020-27653 json
Algorithm downgrade vulnerability in QuickConnect in Synology Router Manager (SRM) before 1.2.4-8081 allows man-in-the-middle attackers to…
published 2020-10-29 6 y ago modified 2026-06-17 4 mo ago also EUVD-2020-20160
- cvss
- 8.3
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.8%
- EPSS 0.8% chance of exploitation in 30 days, percentile 57%
- public exploits
- 0
- none known
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.
Patch / fix
- Synology Synology Router Manager (SRM) 1.2.4-8081
Exploit prediction
0.83% chance of exploitation in the next 30 days, higher than 57% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- talosintelligence.com https://www.talosintelligence.com/vulnerability_reports/TALOS-2020-1061 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 8.3 | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H |
| NVD | 3.1 | 8.3 | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H |
| NVD | 2.0 | 5.1 | AV:N/AC:H/Au:N/C:P/I:P/A:P |
Affected products
- Synology Synology Router Manager (SRM)
Classification
- Weakness
-
- CWE-327 Use of a Broken or Risky Cryptographic Algorithm
References
-
talosintelligence.com
/vulnerability_reports/TALOS-2020-1061
exploit, third-party-advisory
-
synology.com
/security/advisory/Synology_SA_20_14
vendor-advisory
Sources
- CVE List CVE-2020-27653
- NVD CVE-2020-27653
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