CISCO-CVE-2025-20311

HIGH7.4

Cisco IOS XE Software for Catalyst 9000 Series Switches Denial of Service Vulnerability

Published Sep 24, 2025

Modified 5 months ago

Affected Packages

Cisco IOS XE

CiscoIOSXE

Affected versions:

16.10.116.10.1e16.10.1s16.10.316.11.116.11.1b16.11.1c16.11.1s16.11.216.12.1+146 more

CVSS Analysis

CVSS v3.1

7.4

Exploitability

Attack Vector

AdjacentAV:A

Attack Complexity

LowAC:L

Privileges Required

NonePR:N

User Interaction

NoneUI:N

Scope

ChangedS:C

Impact

Confidentiality

NoneC:N

Integrity

NoneI:N

Availability

HighA:H

7.4/CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

Upstream

Ecosystems

Timeline

PublishedSep 24, 2025

ModifiedSep 30, 2025