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Cisco Security Advisoriescisco-sa-iosxe-bing-MGHrFAkd

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

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. Cisco has released software updates that address this vulnerability. There are no workarounds that address these vulnerabilities. This advisory is available at the following link:https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe-bing-MGHrFAkd Security Impact Rating: High CVE: CVE-2026-20263

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HighCVSS not listedHigh severity
Scope

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Next step

What the vendor recommends

Cisco has released software updates that address this vulnerability.

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Vulnerabilities

CVEs named in this advisory

CVE-2026-20263View CVSS, KEV, EPSS, and threat context
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