CVE-2026-20263 — 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 (…
Published: 2026-08-05 · CVSS: 8.6 · CVSS 3.1
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7