CISCO-CVE-2026-20010

HIGH7.4

Cisco Nexus 3000 and 9000 Series Switches Link Layer Discovery Protocol Denial of Service Vulnerability

Published Feb 25, 2026

Modified 1 weeks ago

Affected Packages

Cisco NX-OS

CiscoNXOS Nexus3000

Affected versions:

10.3(1)10.3(2)10.3(3)10.3(4)10.3(4a)10.4(1)10.4(2)

Cisco NX-OS

CiscoNXOS Nexus9000

Affected versions:

10.3(1)10.3(2)10.3(3)10.3(3o)10.3(3p)10.3(3q)10.3(3r)10.3(3w)10.3(3x)10.3(4)+7 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

PublishedFeb 25, 2026

ModifiedFeb 25, 2026