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CVE-2026-20263: Error Handling in Cisco Cisco IOS XE Software

0
High
VulnerabilityCVE-2026-20263cvecve-2026-20263
Published: 08/05/2026 (08/05/2026, 16:18:33 UTC)
Source: CVE Database V5
Vendor/Project: Cisco
Product: Cisco IOS XE Software

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.

CVSS v3.1

Score 8.6high

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
None
Integrity
None
Availability
High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

Affected software

Affected versions
=17.2.1a=16.12.1y=16.12.3s=16.7.1b=16.6.2=16.6.5=16.12.1w=16.9.1d=17.3.1=16.9.4c=16.7.1=17.2.1=16.6.8=16.9.1b=16.9.2s=16.12.4=16.12.3a=17.1.1s=16.11.1a=16.7.2=16.11.1b=16.9.1s=16.9.3h=16.9.1c=16.6.5a=16.6.3=16.10.1f=17.2.1v=16.8.1e=16.9.3a=16.12.1a=16.12.1x=16.6.4s=16.10.1c=16.12.3=16.11.2=16.6.5b=16.12.2s=16.10.1b=16.7.3=16.6.7=16.9.6=16.9.2=16.10.1=16.12.1t=16.9.1=16.8.1a=16.9.3s=16.6.7a=16.12.2=16.11.1=16.9.3=16.11.1s=16.12.1=17.1.1=17.1.2=16.10.1d=17.1.1t=16.9.4=16.8.3=16.12.2t=16.9.5=16.8.1s=16.10.1e=16.8.2=16.6.4=16.8.1b=16.10.1a=16.12.1z=16.8.1c=16.9.1a=16.9.5f=16.6.4a=16.10.1g=16.8.1=16.6.6=16.9.2a=16.8.1d=16.10.3=16.7.1a=16.11.1c=16.10.1s=17.2.1r=17.1.1a=16.10.2=16.12.2a=16.12.1c=16.12.1s=16.7.4=17.2.2=16.9.8=16.9.7=17.1.3=17.3.1a=17.3.2a=16.12.5=17.3.1w=17.3.2=17.4.1=16.12.4a=17.4.1a=17.3.1x=17.3.3=16.6.9=17.2.3=17.5.1=16.12.1z1=16.12.5a=17.4.1b=17.3.1z=16.12.5b=17.4.2=17.3.3a=17.3.5=17.3.4=17.5.1a=16.12.6=17.6.1=16.12.1z2=16.6.10=17.3.4a=17.6.1a=17.7.1=17.6.1x=17.6.2=16.12.6a=17.3.4c=17.4.2a=17.3.4b=17.7.1a=16.12.7=17.8.1a=17.6.3a=17.6.3=17.7.2=17.7.1b=17.9.1w=17.3.5a=17.6.1z=16.12.8=17.8.1=17.9.1=17.6.4=17.3.5b=17.9.1a=17.3.6=17.10.1=16.9.8a=17.6.1z1=17.10.1a=17.9.2=17.6.5=17.9.1x=17.9.1y=16.9.8b=17.3.7=17.9.2a=17.9.3=16.12.9=17.11.1=17.10.1b=17.6.6=17.9.1x1=17.11.1a=17.9.3a=17.12.1=17.3.8=17.9.4=16.12.10=17.12.1w=17.9.1y1=17.12.1a=17.9.5=17.13.1=17.12.1x=17.12.2=17.14.1=17.9.4a=17.3.8a=17.6.6a=17.6.5a=17.6.7=16.12.10a=17.15.1=17.13.1a=17.12.2a=16.12.11=17.12.3=17.12.1y=17.12.1z=17.9.5a=17.14.1a=17.9.5b=17.6.8=16.12.12=17.12.4=17.9.6=17.17.1=17.16.1=17.15.1w=17.12.3a=17.9.5c=17.15.1a=17.12.1z1=17.15.2=17.15.1b=17.9.5d=17.15.1x=17.9.6a=17.12.1z2=17.6.8a=17.16.1a=16.12.13=17.15.3=17.9.7=17.12.5=17.15.1y=17.9.5e=17.12.4a=17.15.2a=17.15.2c=17.15.2b=17.12.1z3=17.9.5f=17.12.4b=17.12.5a=17.18.1=17.12.6=17.12.1z4=17.9.8=17.9.7a=17.15.3a=17.15.4=17.12.5b=17.15.3b=16.12.14=17.18.1z=17.9.7b=17.12.5c=26.1.1=17.18.1a=17.15.4a=17.18.2=17.18.1w=17.15.4b=17.12.6a=17.12.7=17.15.4c=17.9.9=17.12.5d=16.12.15=17.15.4s1=17.15.5=17.12.1z5=17.18.1x=17.12.1z6=17.15.4d=17.12.6b=17.4.1c=17.15.5a=17.18.1y=17.12.7a=17.18.3=17.12.7b=17.18.3a=26.1.1a=26.2.1ea

Technical Details

Data Version
5.2
Assigner Short Name
cisco
Date Reserved
2025-10-08T11:59:15.402Z
Cvss Version
3.1
State
PUBLISHED
Remediation Level
null

Threat ID: 6a736b60bf8831d5392da485

Added to database: 08/05/2026, 16:57:04 UTC

Last updated: 08/05/2026, 16:57:04 UTC

Views: 1

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