KEV Entry

CVE-2021-27561

Known Exploited Vulnerability Entry External Catalog

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Entry Details
Confirmed Exploited

CVE-2021-27561

2021-11-03 00:00 UTC

Timestamps

2021-11-03

2021-11-03

Scope

KEVIntel entry: Yealink Device Management (DM) 3.6.0.20 allows command injection as root via the /sm/api/v1/firewall/zone/services URI, without authentication. | Affected: Yealink / Device Management | CVSS: 9.8 (CRITICAL) | Used in malware: unknown | Not yet in CISA KEV: False

References
  • {'id': 'CVE-2021-27561', 'url': 'https://www.cve.org/CVERecord?id=CVE-2021-27561'}
  • {'id': 'kevintel', 'url': 'https://kevintel.com/vuln/CVE-2021-27561'}

2d9a4a01-122f-45f4-8aea-c52daf31983e

caeb2787-0d58-4236-9039-7c86c3e566f3

2026-06-23 14:04 UTC

2026-06-23 14:04 UTC

Evidence
1
Type Source Signal Confidence Details GCVE Metadata
public_report kevintel successful_exploitation 0.70
View details 
{
  "added_date": "2021-11-03T00:00:00.000Z",
  "ahead_of_cisa_kev": null,
  "cvss_score": 9.8,
  "cvss_severity": "CRITICAL",
  "epss_percentile": null,
  "epss_score": null,
  "feed": "KEVIntel (kevintel.com)",
  "not_yet_in_cisa_kev": false,
  "product": "Device Management",
  "title": "Yealink Device Management (DM) 3.6.0.20 allows command injection as root via the /sm/api/v1/firewall/zone/services URI, without authentication.",
  "used_in_malware": "unknown",
  "vendor": "Yealink"
}
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