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CISA KEV(1802d overdue)EPSS 82.9%top 0.33%

CVE-2021-27561: Yealink Device Management Server-Side Request Forgery (SSRF) Vulnerability

0
High
Vulnerability
Published: 11/03/2021 (11/03/2021, 00:00:00 UTC)
Last modified: 10/24/2026
Source: CISA KEV
Vendor/Project: Yealink
Product: Device Management

Description

Yealink Device Management contains a server-side request forgery (SSRF) vulnerability that enables unauthenticated remote code execution. This vulnerability has been exploited in the wild and is considered high severity. No specific affected versions or patch information are provided.

AI-Powered Analysis

Machine-generated threat intelligence

AILast updated: 10/24/2026, 08:42:39 UTC

Technical Analysis

CVE-2021-27561 is a server-side request forgery (SSRF) vulnerability in Yealink Device Management that allows unauthenticated attackers to execute remote code. The vulnerability has been observed in active exploitation campaigns. Details on affected versions and remediation are not provided in the available data.

Potential Impact

The vulnerability allows unauthenticated remote code execution, which can lead to full compromise of the affected Yealink Device Management system. Exploitation has been confirmed in the wild, indicating active threat actors are leveraging this flaw.

Mitigation Recommendations

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict access to the Yealink Device Management interface and monitor for suspicious activity related to SSRF attempts.

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Threat ID: 6adc6f613fe894698b2dda75

Added to database: 10/24/2026, 08:42:09 UTC

Last enriched: 10/24/2026, 08:42:39 UTC

Last updated: 10/24/2026, 09:23:32 UTC

Views: 6

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