CVE-2025-20315 — Buffer Access with Incorrect Length Value in Cisco IOS XE Software

CWE-805 — Buffer Access with Incorrect Length Value4 documents4 sources

Severity

8.6HIGHNVD

EPSS

0.1%

top 66.51%

CISA KEV

Not in KEV

Exploit

No known exploits

Affected products

Cisco IOS XE Software

Timeline

PublishedSep 24

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 al…

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:HExploitability: 3.9 | Impact: 4.0

Affected Packages1 packages

▶CVEListV5cisco/cisco_ios_xe_software340 versions+339

🔴Vulnerability Details

GHSA

GHSA-mq8j-42c3-pxm3: A vulnerability in the Network-Based Application Recognition (NBAR) feature of Cisco IOS XE Software could allow an unauthenticated, remote attacker t↗2025-09-24

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CVEList

CVE-2025-20315: A vulnerability in the Network-Based Application Recognition (NBAR) feature of Cisco IOS XE Software could allow an unauthenticated, remote attacker t↗2025-09-24

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📋Vendor Advisories

Cisco

Cisco IOS XE Software Network-Based Application Recognition Denial of Service Vulnerability↗2025-09-24

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