CVE-2026-76501 Cisco NX-OS - Remote Code Execution & Denial of Service

Cisco NX-OS Software contains a remote code execution and denial of service vulnerability caused by improper input validation in the Segment Routing over IPv6 (SRv6) NGOAM feature, letting unauthenticated remote attackers execute arbitrary code with root privileges or cause device reloads, exploit requires NGOAM and SRv6 features enabled.

CVSS base score 9.8 /10
Critical
CISA KEV
Not listed
Public exploit
None known
EPSS
0.51% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Remote Code Execution
Impact
Remote Code Execution, Denial Of Service
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published
7 October 2026
Updated
15 October 2026
Weakness
CWE-121

Vendor fix

Update to the latest Cisco NX-OS Software version with the NGOAM and SRv6 vulnerability fixed.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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