CVE-2026-76458

HIGH

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 s...

Affects 0 products across 1 vendor.

CVSS 3.18.6
EPSS0.3%
Percentile19th
PatchUnknown
CVSS Vector — Plain English Remotely exploitable over the network, low complexity, no authentication required, no user interaction needed, can impact systems beyond the vulnerable component, no confidentiality impact, no integrity impact, full availability impact.
CWE Weakness Definitions
CWE-703: CWE-703
◆ AI Analysis — automated analysis, not human-reviewed

A high severity vulnerability (CVE-2026-76458) affects the target system. 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 int...

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Frequently Asked Questions
What is CVE-2026-76458?
A high severity vulnerability (CVE-2026-76458) affects the target system. 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 int...
What is the CVSS score for CVE-2026-76458?
CVE-2026-76458 has CVSS 8.6 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H. EPSS: 0.3%.
Is CVE-2026-76458 actively exploited?
No confirmed active exploitation of CVE-2026-76458 as of 2026-10-11.
How do I remediate CVE-2026-76458?
Apply vendor patches for CVE-2026-76458. Monitor Cisco advisories.
What systems are affected by CVE-2026-76458?
CVE-2026-76458 affects: Cisco.
Vulnerability Details
CVE IDCVE-2026-76458
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Published2026-10-07
Last Modified2026-10-08
ICS Relevance55%
Weakness (CWE)
CWE-703
SourceNVD
Official Description

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.

Source: NIST NVD / MITRE CVE Database

Affected Products
VendorProductAffected Versions
Cisco — —
Remediation

No patch URL on record. Monitor vendor security advisories directly.

Threat Intelligence
● Threat Intelligence Validated: October 2026 | Threat Age: 3 Days
CISA known-exploitedNot in KEV catalog
Public ExploitNot confirmed
PoC CodeNot confirmed
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