- Vulnerability/
- cisco-sa-twamp-kV4FHugn
cisco-sa-twamp-kV4FHugn: Cisco IOS, IOS XE, and IOS XR Software TWAMP Denial of Service Vulnerability
First published: Wed May 07 2025(Updated: )
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:LCisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.This advisory is available at the following link:https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-twamp-kV4FHugnThis advisory is part of the May 2025 release of the Cisco IOS and IOS XE Software Security Advisory Bundled Publication. For a complete list of the advisories and links to them, see Cisco Event Response: May 2025 Semiannual Cisco IOS and IOS XE Software Security Advisory Bundled Publication.
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Cisco IOS | ||
| Cisco IOS XE | ||
| Cisco IOS XRv 9000 |
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
Frequently Asked Questions
What is the severity of cisco-sa-twamp-kV4FHugn?
The severity of cisco-sa-twamp-kV4FHugn is considered high as it can lead to a denial of service (DoS) condition.
What causes the vulnerability identified as cisco-sa-twamp-kV4FHugn?
The cisco-sa-twamp-kV4FHugn vulnerability is caused by an issue in the Two-Way Active Measurement Protocol (TWAMP) server feature.
How do I fix cisco-sa-twamp-kV4FHugn?
To fix cisco-sa-twamp-kV4FHugn, update to the latest patched versions of Cisco IOS, IOS XE, or IOS XR software.
Who is affected by the cisco-sa-twamp-kV4FHugn vulnerability?
The cisco-sa-twamp-kV4FHugn vulnerability affects devices running Cisco IOS Software, IOS XE Software, and IOS XR Software with TWAMP enabled.
Can cisco-sa-twamp-kV4FHugn be exploited remotely?
Yes, cisco-sa-twamp-kV4FHugn can be exploited by an unauthenticated remote attacker.
- collector/cisco-recent
- source/Cisco
- agent/severity
- agent/title
- agent/references
- agent/source
- agent/last-modified-date
- agent/description
- agent/first-publish-date
- agent/type
- agent/event
- agent/softwarecombine
- agent/tags
- agent/guess-ai
- agent/software-canonical-lookup
- vendor/cisco
- canonical/cisco ios
- canonical/cisco ios xe
- canonical/cisco ios xrv 9000