PT-2026-107584 · Cisco · Cisco Nexus 9000 Series Fabric Switches
CVE-2026-20038
·
Published
2026-10-07
·
Updated
2026-10-07
CVSS v3.1
5.8
Medium
| Vector | AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N |
Name of the Vulnerable Software and Affected Versions
Cisco Nexus 9000 Series Fabric Switches in ACI Mode (affected versions not specified)
Description
An improper control within the endpoint group (EPG) contract functionality allows an unauthenticated remote attacker to bypass configured EPG contracts. This is achieved by sending IPv4 or IPv6 packets using UDP source and destination ports assigned to DHCP traffic through the affected device.
Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Improper Access Control
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Weakness Enumeration
Related Identifiers
Affected Products
Cisco Nexus 9000 Series Fabric Switches