CVE-2021-26561

moderate-risk
Published 2021-02-26

Stack-based buffer overflow vulnerability in synoagentregisterd in Synology DiskStation Manager (DSM) before 6.2.3-25426-3 allows man-in-the-middle attackers to execute arbitrary code via syno_finder_site HTTP header.

Do I need to act?

~
2.3% chance of exploitation in next 30 days
EPSS score — moderate exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
9
CVSS 9.0/10 Critical
NETWORK / HIGH complexity

Affected Products (4)

Skynas Firmware

Affected Vendors

Synology

References (4)

Vendor Advisory https://www.synology.com/security/advisory/Synology_SA_20_26
Exploit https://www.talosintelligence.com/vulnerability_reports/TALOS-2020-1159
Vendor Advisory https://www.synology.com/security/advisory/Synology_SA_20_26
Exploit https://www.talosintelligence.com/vulnerability_reports/TALOS-2020-1159
41
/ 100
moderate-risk
Severity 26/34 · High
Exploitability 5/34 · Minimal
Exposure 10/34 · Low