Paper/Archive/CVE-2026-76501

CVE-2026-76501

Cisco Cisco NX-OS Software — Cisco Nexus 9000 Series Switches SRv6 OAM (NGOAM) Remote Code Execution Vulnerability

CVSS 9.8 (CNA)9.8 / 10 × 3029.4 Not in CISA KEV+300.0 EPSS percentile 44.2.442 × 208.8 No public exploit+100.0 SSVC exploitation: none+100.0

Description · from the CVE record

A vulnerability in the Segment Routing over IPv6 (SRv6) Operation, Administration, and Maintenance (OAM) feature of Cisco NX-OS Software, known as NGOAM, could allow an unauthenticated, remote attacker to execute arbitrary code with root privileges or cause a denial of service (DoS) on an affected device. This vulnerability is due to improper input validation of IP traffic when the NGOAM and SRv6 features are enabled. An attacker could exploit this vulnerability by sending crafted packets to an IP interface on an affected device. A successful exploit could allow the attacker to execute arbitrary code with root privileges and could cause process crashes resulting in a reload and DoS condition.

Affected

ProductAffectedFixed inSource

Cisco NX-OS Software9.3(3)–CNA

Cisco NX-OS Software9.3(4)–CNA

Cisco NX-OS Software9.3(5)–CNA

Cisco NX-OS Software9.3(6)–CNA

Cisco NX-OS Software9.3(5w)–CNA

Cisco NX-OS Software9.3(7)–CNA

Cisco NX-OS Software9.3(7k)–CNA

Cisco NX-OS Software9.3(7a)–CNA

Cisco NX-OS Software9.3(8)–CNA

Cisco NX-OS Software9.3(9)–CNA

Cisco NX-OS Software9.3(10)–CNA

Cisco NX-OS Software10.3(1)–CNA

Scores by source

cisco (CNA)9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total

References

refsec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ngoam-rce-LWKQ4BU