CVE-2026-76458 Cisco NX-OS - Denial of Service

Cisco NX-OS contains improper handling of exceptional conditions (CWE-703) causing multiple vulnerabilities, letting attackers potentially cause denial of service or other impacts, exploit requires network access.

CVSS base score 8.6 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.28% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Denial of Service
Impact
Denial Of Service
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Published
7 October 2026
Updated
15 October 2026
Weakness
CWE-703

Vendor fix

Update to the latest Cisco NX-OS software hardening release.

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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