SEPTEMBER 17, 2026
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Case File

CVE-2026-20276

HIGH · CVSS 8.6 EPSS 0.27%

Source: NVD + CISA KEV + EPSS · Published 2026-09-02 · Last synced 2026-09-17

CyberRota Analysis

AI-Generated

Cisco IOS XR Software is vulnerable due to insufficient control flow management, which could allow an attacker to exploit the system. The impact of this vulnerability is significant, potentially leading to unauthorized access or manipulation of system operations. Organizations using Cisco IOS XR should prioritize patching this vulnerability to mitigate the associated risks.

CVE
CVE-2026-20276
Severity
HIGH
CVSS
8.6
EPSS
0.27%
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-2026-20276 are related to insufficient control flow management issues that are grouped under the Common Weakness Enumeration (CWE) CWE-691.