---
id: "CVE-2026-76300"
kind: "vulnerability"
aliases: ["CVE-2026-76300"]
title: "Cisco: internal review hardening release fixes resource lifetime flaws"
severity: "unknown"
cvss: null
epss: 0.0017
exploited: false
status: "open"
category: "vendor"
products: []
ecosystems: []
tags: ["cisco", "vendor"]
not_affected_if: []
published_at: "2026-10-21T23:17:28+00:00"
first_seen_at: "2026-10-23T21:57:29+00:00"
updated_at: "2026-10-25T05:01:57+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-76300", "first_seen_at": "2026-10-23T21:57:29+00:00"}, {"source": "epss", "url": "https://api.first.org/data/v1/epss?cve=CVE-2026-76300", "first_seen_at": "2026-10-24T13:15:54+00:00"}]
---

# Cisco: internal review hardening release fixes resource lifetime flaws

Cisco reports multiple internally discovered flaws grouped under CWE-664, improper control of a resource through its lifetime, fixed in a software hardening release. The sources do not name the affected products or describe what an attacker could do.

_Summary, check and fix written by a model from the sources; labelled as such._

## Fix

- Move to the software hardening release Cisco published for the affected product (version not stated in the sources).

## Timeline

- 2026-10-23T21:57:29+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-76300
- 2026-10-24T13:15:54+00:00 epss https://api.first.org/data/v1/epss?cve=CVE-2026-76300

## From the sources

As part of Cisco's ongoing commitment to proactive security and product quality, Cisco 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-2026-76300 are related to improper control of a resource through its lifetime and are grouped under the Common Weakness Enumeration (CWE) CWE-664.

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_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_