XSS in Synology Safe Access
CVE-2020-27659
Multiple cross-site scripting (XSS) vulnerabilities in Synology SafeAccess before 1.2.3-0234 allow remote attackers to inject arbitrary web script or HTML via the (1) domain or (2) profile parameter.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.4 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.052 (92.2th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 92nd percentile — 92.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.052 · newest: 0.052 · change: 0.000
Affected products
- Synology Safe Access — versions unspecified
- Synology Safeaccess
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.synology.com/security/advisory/Synology_SA_20_25 (Vendor Advisory)
- www.talosintelligence.com/vulnerability_reports/TALOS-2020-1087 (Exploit, Third Party Advisory)
- github.com/thomasfady/Synology_SA_20_25 (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-27659?
- CVE-2020-27659 is a high-severity vulnerability in Synology Safe Access, classified under Cross-site Scripting. CVSS score: 8.4/10. Published 2020-11-30.
- How severe is CVE-2020-27659?
- High severity. CVSS v3 base score is 8.4 out of 10.
- Is CVE-2020-27659 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.