CVEvulnerability
CVE-2025-20189
7.4 HIGH
Official page ↗
- Status
- Analyzed
- Published
- 2025-05-07
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 7.4 HIGH — CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
- Weaknesses
- CWE-762
Description
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 configurations
• cisco ios xe 3.16.0cs
• cisco ios xe 3.16.0s
• cisco ios xe 3.16.1as
• cisco ios xe 3.16.1s
• cisco ios xe 3.16.2as
• cisco ios xe 3.16.2bs
• cisco ios xe 3.16.2s
• cisco ios xe 3.16.3as
• cisco ios xe 3.16.3s
• cisco ios xe 3.16.4as
• cisco ios xe 3.16.4bs
• cisco ios xe 3.16.4ds
• cisco ios xe 3.16.4s
• cisco ios xe 3.16.5s
• cisco ios xe 3.16.6bs
• cisco ios xe 3.16.6s
• cisco ios xe 3.16.7as
• cisco ios xe 3.16.7bs
• cisco ios xe 3.16.7s
• cisco ios xe 3.16.8s
• cisco ios xe 3.16.9s
• cisco ios xe 3.16.10s
• cisco ios xe 3.17.0s
• cisco ios xe 3.17.1as
• cisco ios xe 3.17.1s
• cisco ios xe 3.17.2s
• cisco ios xe 3.17.3s
• cisco ios xe 3.17.4s
• cisco ios xe 3.18.0as
• cisco ios xe 3.18.0s
• cisco ios xe 3.18.0sp
• cisco ios xe 3.18.1asp
• cisco ios xe 3.18.1bsp
• cisco ios xe 3.18.1csp
• cisco ios xe 3.18.1s
• cisco ios xe 3.18.1sp
• cisco ios xe 3.18.2asp
• cisco ios xe 3.18.2s
• cisco ios xe 3.18.2sp
• cisco ios xe 3.18.3asp
• cisco ios xe 3.18.3bsp
• cisco ios xe 3.18.3s
• cisco ios xe 3.18.3sp
• cisco ios xe 3.18.4s
• cisco ios xe 3.18.4sp
• cisco ios xe 3.18.5sp
• cisco ios xe 3.18.6sp
• cisco ios xe 3.18.7sp
• cisco ios xe 3.18.8asp
• cisco ios xe 3.18.9sp
• cisco ios xe 16.1.1
• cisco ios xe 16.1.2
• cisco ios xe 16.1.3
• cisco ios xe 16.2.1
• cisco ios xe 16.2.2
• cisco ios xe 16.3.1
• cisco ios xe 16.3.1a
• cisco ios xe 16.3.2
• cisco ios xe 16.3.3
• cisco ios xe 16.3.4
… and 206 more
Related
Weakness · CWE (1)
- CWE-762 Mismatched Memory Management Routines weakness