CVE-2025-20154CWE-20

Cisco IOS, IOS XE and IOS XR Software TWAMP Denial of Service Vulnerability

High · published May 7, 2025

CVSS v3.1
8.6
EPSS
1%
Percentile
44.4
In the wild
Unconfirmed
What it is

A vulnerability in the Two-Way Active Measurement Protocol (TWAMP) server feature of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause the affected device to reload, resulting in a denial of service (DoS) condition. For Cisco IOS XR Software, this vulnerability could cause the ipsla_ippm_server process to reload unexpectedly if debugs are enabled.

This vulnerability is due to out-of-bounds array access when processing specially crafted TWAMP control packets. An attacker could exploit this vulnerability by sending crafted TWAMP control packets to an affected device. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a DoS condition.

Note: For Cisco IOS XR Software, only the ipsla_ippm_server process reloads unexpectedly and only when debugs are enabled. The vulnerability details for Cisco IOS XR Software are as follows:    Security Impact Rating (SIR): Low    CVSS Base Score: 3.7    CVSS Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L

The record
Technical detail
CVSS v3.1
8.6 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.00536 · 44.4th percentile
Weakness
CWE-20 · Improper Input Validation
Published
2025-05-07T17:18Z
EPSS history
Timeline
  • 07 MAY 17:18Z
    Cisco IOS, IOS XE and IOS XR Software TWAMP Denial of Service Vulnerability
    cvelistv5