CVE-2021-27561

high-risk
Published 2021-10-15

Yealink Device Management (DM) 3.6.0.20 allows command injection as root via the /sm/api/v1/firewall/zone/services URI, without authentication.

Do I need to act?

!
94.1% chance of exploitation in next 30 days
EPSS score — higher than 6% of all CVEs
!
CISA KEV: actively exploited in the wild
On the Known Exploited Vulnerabilities catalog — federal agencies must patch
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
9
CVSS 9.8/10 Critical
NETWORK / LOW complexity

Affected Products (1)

Affected Vendors

Yealink

References (3)

Third Party Advisory https://ssd-disclosure.com/?p=4688
Third Party Advisory https://ssd-disclosure.com/?p=4688
US Government Resource https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-...
64
/ 100
high-risk
Severity 32/34 · Critical
Exploitability 27/34 · High
Exposure 5/34 · Minimal