SEPTEMBER 15, 2026
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Case File

CVE-2026-20279

CRITICAL · CVSS 9.8 EPSS 0.28%

Source: NVD + CISA KEV + EPSS · Published 2026-09-02 · Last synced 2026-09-15

CyberRota Analysis

AI-Generated

Cisco IOS XR Software is vulnerable due to improper access control issues, which could allow unauthorized access and manipulation of system resources. The impact is critical, with a CVSS score of 9.8, indicating a high risk of exploitation that could lead to significant security breaches. Network administrators and organizations using Cisco IOS XR should prioritize immediate patching to mitigate potential threats.

CVE
CVE-2026-20279
Severity
CRITICAL
CVSS
9.8
EPSS
0.28%
Cisco

Original NVD Description

As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco IOS XR Software engineering team has conducted a comprehensive internal security review. This review resulted in a software hardening releases that address multiple internally discovered vulnerabilities. The vulnerabilities tracked by CVE-2026-20279 are related to improper access control issues that are grouped under the Common Weakness Enumeration (CWE) CWE-284.