Is there a public exploit for CVE-2026-76458?

No public exploit for CVE-2026-76458 was found in Exploit-DB, Metasploit, Nuclei templates or public proof-of-concept repositories. That is an absence of evidence rather than proof that none exists.

How severe is CVE-2026-76458?

CVE-2026-76458 scores CVSS 8.6 (v3.1), rated high. EPSS puts the chance of exploitation in the next 30 days at 0.28%.

What does CVE-2026-76458 affect?

CVE-2026-76458 affects Cisco Cisco NX-OS Software, Cisco Unified Computing System (Managed), Cisco NX-OS System Software in ACI Mode.

8.6 High

As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco NX-OS engineering team has conducted a…

CVE-2026-76458

As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco NX-OS engineering team has conducted a comprehensive internal security review. This review resulted in a software hardening release that addresses multiple internally discovered vulnerabilities. The vulnerabilities tracked by CVE-2026-76458 are related to improper handling of exceptional conditions issues that are grouped under the Common Weakness Enumeration (CWE) CWE-703.

Assessment

CVSS: 8.6 (v3.1)
Severity: High
EPSS: 0.28% chance of exploitation in the next 30 days
Known exploited: Not listed in CISA KEV
Exploit availability: Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
Published: 7 October 2026
Last updated: 7 November 2026
Affected: Cisco · Cisco NX-OS Software · Cisco NX-OS System Software in ACI Mode · Cisco Unified Computing System (Managed)
Assigner: cisco

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

At the source

EUVD (ENISA)

References

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-hardening-nxosw1-cWzSbtR

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