VYPR
Unrated severityNVD Advisory· Published Aug 5, 2026· Updated Aug 5, 2026

Cisco IOS XE Software Blocks Extensible Exchange Protocol Denial of Service Vulnerability

CVE-2026-20263

Description

A vulnerability in the Blocks Extensible Exchange Protocol (BEEP) feature of Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device.

This vulnerability is due to improper handling when parsing a specific BEEP SOAP request. An attacker could exploit this vulnerability by sending a specific BEEP SOAP request to an affected device. A successful exploit could allow the attacker to cause the device to reload unexpectedly, resulting in a DoS condition.

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Affected products

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Vulnerability mechanics

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