{"id":87110,"date":"2026-06-13T03:59:27","date_gmt":"2026-06-13T03:59:27","guid":{"rendered":""},"modified":"-0001-11-30T00:00:00","modified_gmt":"-0001-11-30T06:00:00","slug":"cve-2025-20189-denial-of-service-vulnerability-in-cisco-ios-xe-software","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-20189-denial-of-service-vulnerability-in-cisco-ios-xe-software\/","title":{"rendered":"CVE-2025-20189: Denial of Service Vulnerability in Cisco IOS XE Software<\/strong>"},"content":{"rendered":"

Overview<\/strong><\/p>\n

The CVE-2025-20189 vulnerability is a significant flaw in the Cisco Express Forwarding functionality of the Cisco IOS XE Software for Cisco ASR 903 Aggregation Services Routers with Route Switch Processor 3 (RSP3C). This vulnerability can be exploited by an unauthenticated, adjacent attacker to trigger a denial of service (DoS) condition, potentially compromising the system or leading to data leakage.<\/p>\n

Vulnerability Summary<\/strong><\/p>\n

CVE ID: CVE-2025-20189
\nSeverity: High (7.4 CVSS Score)
\nAttack Vector: Network
\nPrivileges Required: None
\nUser Interaction: None
\nImpact: Successful exploitation could allow the attacker to exhaust system resources, causing a reload of the active route switch processor (RSP). In the absence of a redundant RSP, the router reloads, potentially leading to system compromise or data leakage.<\/p>\n

Affected Products<\/strong><\/p>

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