CVE Alert: CVE-2025-20189
Vulnerability Summary: CVE-2025-20189
A vulnerability in the Cisco Express Forwarding functionality of Cisco IOS XE Software for Cisco ASR 903 Aggregation Services Routers with Route Switch Processor 3 (RSP3C) could allow an unauthenticated, adjacent attacker to trigger a denial of service (DoS) condition. This vulnerability is due to improper memory management when Cisco IOS XE Software is processing Address Resolution Protocol (ARP) messages. An attacker could exploit this vulnerability by sending crafted ARP messages at a high rate over a period of time to an affected device. A successful exploit could allow the attacker to exhaust system resources, which eventually triggers a reload of the active route switch processor (RSP). If a redundant RSP is not present, the router reloads.
Affected Endpoints:
No affected endpoints listed.
Published Date:
5/7/2025, 6:15:38 PM
🔥 CVSS Score:
Exploit Status:
Not ExploitedReferences:
Recommended Action:
No proposed action available. Please refer to vendor documentation for updates.
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