Vulnerability · Published Feb 26, 2021 · Assigned by synology
CVE-2021-26561
Critical 9.0
In plain English
A critical-severity stack buffer overflow in Synology DiskStation Manager (DSM) from Synology. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 2.1% (higher than 81% of all known vulnerabilities).
Severity (CVSS 3.1)9.0Critical
Exploit odds (30 days)2.1%top 18.6% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Synology | Synology DiskStation Manager (DSM) | unspecified – before 6.2.3-25426-3 |
Weakness: CWE-121 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
References
- https://www.synology.com/security/advisory/Synology_SA_20_26 x_refsource_CONFIRM
- https://www.talosintelligence.com/vulnerability_reports/TALOS-2020-1159 x_refsource_MISC