CVE-2025-20154

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

Published May 7, 2025 CVSS 3.1 · 8.6 High EPSS < 1% KEV · Not listed
Description
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&nbsp;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:&nbsp;&nbsp;&nbsp;&nbsp;Security Impact Rating (SIR): Low&nbsp;&nbsp;&nbsp;&nbsp;CVSS Base Score: 3.7&nbsp;&nbsp;&nbsp;&nbsp;CVSS Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2025-13922 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&nbsp;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:&nbsp;&nbsp;&nbsp;&nbsp;Security Impact Rating (SIR): Low&nbsp;&nbsp;&nbsp;&nbsp;CVSS Base Score: 3.7&nbsp;&nbsp;&nbsp;&nbsp;CVSS Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
History
Type Values Removed Values Added
First Time appeared Cisco
Cisco ios
Cisco ios Xe
Cisco ios Xr
CPEs cpe:2.3:o:cisco:ios:*:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:*:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:24.1.1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:24.1.2:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:24.2.11:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:24.2.1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:24.2.20:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:24.2.2:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:24.3.1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:6.5.15:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:6.5.1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:6.5.25:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:6.5.26:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:6.5.28:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:6.5.29:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:6.5.2:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:6.5.31:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:6.5.32:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:6.5.33:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:6.5.35:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:6.5.3:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:6.5.90:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:6.5.92:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:6.5.93:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:6.6.11:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:6.6.12:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:6.6.1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:6.6.25:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:6.6.2:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:6.6.3:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:6.6.4:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:6.7.1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:6.7.2:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:6.7.35:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:6.7.3:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:6.7.4:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:6.8.1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:6.8.2:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:6.9.1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:6.9.2:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:7.0.0:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:7.0.11:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:7.0.12:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:7.0.14:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:7.0.1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:7.0.2:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:7.0.90:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:7.1.15:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:7.1.1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:7.1.25:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:7.1.2:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:7.1.3:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:7.10.1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:7.10.2:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:7.11.1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:7.11.21:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:7.11.2:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:7.2.0:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:7.2.12:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:7.2.1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:7.2.2:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:7.3.15:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:7.3.16:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:7.3.1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:7.3.27:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:7.3.2:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:7.3.3:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:7.3.4:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:7.3.5:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:7.3.6:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:7.4.15:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:7.4.16:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:7.4.1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:7.4.2:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:7.5.12:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:7.5.1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:7.5.2:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:7.5.3:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:7.5.4:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:7.5.5:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:7.6.15:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:7.6.1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:7.6.2:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:7.6.3:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:7.7.1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:7.7.21:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:7.7.2:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:7.8.1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:7.8.22:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:7.8.23:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:7.8.2:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:7.9.1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:7.9.21:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:7.9.2:*:*:*:*:*:*:*
Vendors & Products Cisco
Cisco ios
Cisco ios Xe
Cisco ios Xr
Type Values Removed Values Added
Metrics epss

{'score': 0.00132}

epss

{'score': 0.00154}

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description 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&nbsp;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:&nbsp;&nbsp;&nbsp;&nbsp;Security Impact Rating (SIR): Low&nbsp;&nbsp;&nbsp;&nbsp;CVSS Base Score: 3.7&nbsp;&nbsp;&nbsp;&nbsp;CVSS Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
Title Cisco IOS, IOS XE and IOS XR Software TWAMP Denial of Service Vulnerability
Weaknesses CWE-20
References
Metrics cvssV3_1

{'score': 8.6, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
cisco
Published
Updated
May 7, 2025, 7:46 PM
Reserved
Oct 10, 2024, 7:15 PM
Status
Analyzed
Published
May 7, 2025, 6:15 PM
Modified
Jun 17, 2026, 8:40 AM