CVE-2020-27649: synology router_manager Improper Certificate Validation
CVSS: 9.0v3.1CriticalModified
Published 29-10-2020Last modified 16-09-2024
Vulnerability summary
CVE-2020-27649 is a critical (CVSS 9.0) Improper Certificate Validation vulnerability in synology router_manager. EPSS estimates a 0.72% chance of exploitation in the next 30 days, higher than 52.9% of scored vulnerabilities. 1 public exploit is recorded.
CVSS score
9.0/10
010
Critical · v3.1 (NVD)EPSS score
0.72%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference
Timeline
- 29-10-2020PublishedVulnerability first disclosed.
- 16-09-2024Last modifiedVulnerability information updated.
Description
Improper certificate validation vulnerability in OpenVPN client in Synology Router Manager (SRM) before 1.2.4-8081 allows man-in-the-middle attackers to spoof servers and obtain sensitive information via a crafted certificate.
CVSS metrics
3 scores · 2 sources · 2 versionsCritical 9.0Preferred score · NVD (NIST)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:HSources2 sources · 8.3–9.0
- CVE.orgCNA8.3HighCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:HDiffers
Medium 6.8Preferred score · NVD (NIST)
AV:N/AC:M/Au:N/C:P/I:P/A:PSourcesSingle source
EPSS trend
Probability
0.72%
Chance of exploitation in the next 30 days
Percentile
53%
Versus all other CVEs
30-day change
0.00 pp
From 0.72% on 18-09-2026
18-09-202618-10-2026
EPSS score0.72%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
1 foundExploit Reference (talosintelligence.com)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Synology2 products
- router_manager≥ 1.2, < 1.2.4-8081
- synology router manager (srm)≥ unspecified, < 1.2.4-8081
1 vendor · 2 products
References
2 links- www.talosintelligence.com/vulnerability_reports/TALOS-2020-1058X Refsource MISCExploitThird Party Advisory