CVE-2025-20315

HIGH EPSS 33.1%

Published Sep 24, 20259mo ago · Modified Jun 17, 20261w ago

8.6 CVSS 3.1

High

Published Sep 24, 2025 9mo ago

Last Modified Jun 17, 2026 1w ago

Description

A vulnerability in the Network-Based Application Recognition (NBAR) feature of Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause an affected device to reload, causing a denial of service (DoS) condition. This vulnerability is due to improper handling of malformed Control and Provisioning of Wireless Access Points (CAPWAP) packets. An attacker could exploit this vulnerability by sending malformed CAPWAP packets through an affected device. A successful exploit could allow the attacker to cause the device to reload unexpectedly, resulting in a DoS condition.

CVSS Details

Base Score

8.6

Exploitability

3.9

Impact

4.0

Vector string

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

Attack Vector Network

Attack Complexity Low

Privileges Required None

User Interaction None

Scope Changed

Confidentiality None

Integrity None

Availability High

Threat Intelligence

EPSS Exploit Probability

33.1% percentile

Exploit & Patch Status

No Known Exploit

No Patch Available

Weaknesses 1

CWE-805

References 1

sec.cloudapps.cisco.com https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nbar-dos-LAvwTmeT

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.