Riskcovery

CVE-2026-20263

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

State
Published
Severity
8.6 High
Published
Aug 5, 2026
Updated
Aug 5, 2026
Reserved
Oct 8, 2025

Read the record on cve.org

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.

Scores

CVSSScoreVectorSource
3.18.6 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:Hcisco

Weaknesses

Affected Products

ProductVersions
Cisco IOS XE SoftwareCisco
  • 17.2.1aAffected
  • 16.12.1yAffected
  • 16.12.3sAffected
  • 16.7.1bAffected
  • 16.6.2Affected
  • 16.6.5Affected
  • 16.12.1wAffected
  • 16.9.1dAffected
  • 17.3.1Affected
  • 16.9.4cAffected
  • 16.7.1Affected
  • 17.2.1Affected
  • 16.6.8Affected
  • 16.9.1bAffected
  • 16.9.2sAffected
  • 16.12.4Affected
  • 16.12.3aAffected
  • 17.1.1sAffected
  • 16.11.1aAffected
  • 16.7.2Affected
  • 16.11.1bAffected
  • 16.9.1sAffected
  • 16.9.3hAffected
  • 16.9.1cAffected
  • 16.6.5aAffected
  • and 242 more versions

References

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