CVE-2020-27652

Name: CVE-2020-27652
Creator: NVD / NIST
Published: 2020-10-29T09:15:13.137+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.3/10EPSS 0.82%

Last modified Jun 17, 2026

CVE-2020-27652 is a high-severity vulnerability rated 8.3/10 on the CVSS scale. Algorithm downgrade vulnerability in QuickConnect in Synology DiskStation Manager (DSM) before 6.2.3-25426-2 allows man-in-the-middle attackers to spoof servers and obtain sensitive information via unspecified vectors.. EPSS estimates a 0.82% chance of exploitation in the next 30 days.

Description

Algorithm downgrade vulnerability in QuickConnect in Synology DiskStation Manager (DSM) before 6.2.3-25426-2 allows man-in-the-middle attackers to spoof servers and obtain sensitive information via unspecified vectors.

Metrics

CVSS 3.1

8.3/10

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H

EPSS Probability

0.82%

52.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Synology	Diskstation Manager	>= 6.2, < 6.2.3-25426-2
Synology	Skynas Firmware	< 6.2.3-25426

References

https://www.synology.com/security/advisory/Synology_SA_20_18Vendor Advisory
https://www.talosintelligence.com/vulnerability_reports/TALOS-2020-1061Exploit, Third Party Advisory
https://www.synology.com/security/advisory/Synology_SA_20_18Vendor Advisory
https://www.talosintelligence.com/vulnerability_reports/TALOS-2020-1061Exploit, Third Party Advisory

Timeline

Published: Oct 29, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-27652?

How severe is CVE-2020-27652?

CVE-2020-27652 has a CVSS score of 8.3/10 (HIGH severity). The EPSS model estimates a 0.82% probability of exploitation in the next 30 days.

How do I fix CVE-2020-27652?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-27652?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST