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CVE-2026-76299

Improper access control in unnamed Cisco software

CVSS 3.1
9.9 critical
EPSS
—
Published
·
Modified
Analyze CVE-2026-76299 with Vani AIImpact, affected versions, exploitation status, mitigations and detection

CVE-2026-76299 covers improper access control found in a Cisco internal security review and addressed in a software hardening release. A remote attacker with low privileges can trigger it over the network without user interaction. Exploitation can fully compromise confidentiality, integrity, and availability beyond the vulnerable component. Cisco has not named the affected product or versions.

What to do: Apply Cisco's software hardening release that addresses CVE-2026-76299. No product-specific fixed version or workaround is stated.

Description · NVD

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.

Weakness
CWE-284
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

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