SEPTEMBER 15, 2026
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Case File

CVE-2026-20274

CRITICAL · CVSS 9.8 EPSS 0.67%

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 resource control issues, which could lead to significant security risks. The critical severity of this vulnerability (CVSS 9.8) necessitates immediate attention from organizations using affected Cisco products to prevent potential exploitation. Network administrators and security teams should prioritize patching and hardening their systems to mitigate these risks.

CVE
CVE-2026-20274
Severity
CRITICAL
CVSS
9.8
EPSS
0.67%
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-2026-20274 are related to improper resource control issues that are grouped under the Common Weakness Enumeration (CWE) CWE-664.