CRITICAL

CVE-2026-76299

CVSS v3

9.9

CRITICAL

EPSS Score

—

exploit probability

CISA KEV

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Neither OSV.dev nor the vendor advisories we read list affected versions for CVE-2026-76299 yet.

Full record on NVD

Description

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-2026-76299 are related to improper access control and are grouped under the Common Weakness Enumeration (CWE) CWE-284.

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Published: 2026-10-21
Last Modified: 2026-10-22

Frequently asked questions

What is CVE-2026-76299?

Is CVE-2026-76299 actively exploited?

Active exploitation of CVE-2026-76299 has not been confirmed.

What is the CVSS score for CVE-2026-76299?

CVE-2026-76299 has a CVSS v3 base score of 9.9 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.

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