CISCO-CVE-2026-20084

HIGH8.6

Cisco IOS XE Software DHCP Snooping Denial of Service Vulnerability

Published Mar 25, 2026

Modified 1 months ago

Affected Packages

Cisco IOS XE

CiscoIOSXE

Affected versions:

16.10.116.10.1e16.10.1s16.11.116.11.1b16.11.1c16.11.1s16.12.116.12.1c16.12.1s+109 more

CVSS Analysis

CVSS v3.1

8.6

Exploitability

Attack Vector

NetworkAV:N

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

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

Upstream

Ecosystems

Timeline

PublishedMar 25, 2026

ModifiedMar 25, 2026