CVE-2026-20038: Cisco Nexus 9000 Series Fabric Switches in ACI Mode Endpoint Group Contract Bypass Vulnerability

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CVE-2026-20038

EPSS 0.00 EPSS k 22. 10. 2026

Hodnocení závažnosti

5.8 CVSS 3.1 cisco

útok odkudkoli z internetu bez přípravy bez přihlášení bez zásahu uživatele
dopad bez úniku dat dílčí změna dat bez výpadku
přesah dopad i mimo zranitelnou součást

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

zvyšuje závažnost mírně zvyšuje závažnost snižuje závažnost

Cisco Nexus 9000 Series Fabric Switches in ACI Mode Endpoint Group Contract Bypass Vulnerability

A vulnerability in the endpoint group (EPG) contract functionality of Cisco Nexus 9000 Series Fabric Switches in ACI Mode could allow an unauthenticated, remote attacker to bypass configured EPG contracts. This vulnerability is due to an improper control with EPG contracts. An attacker could exploit this vulnerability by sending IPv4 or IPv6 packets using UDP source and destination ports that are assigned to DHCP traffic through an affected device. A successful exploit could allow the attacker…

EPSS 0.00 CVE-2026-20038 Cisco US

tg: zranitelnost

· Cisco PSIRT · Cisco Nexus 9000 Series Fabric Switches in ACI Mode Endpoint Group Contract Bypass Vulnerability