SEPTEMBER 17, 2026
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Case File

CVE-2026-20277

HIGH · CVSS 8.2 EPSS 0.23%

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 failures in its protection mechanisms, which could allow attackers to exploit these weaknesses. The impact includes potential unauthorized access or manipulation of system functions, posing significant risks to network integrity and security. Organizations using Cisco IOS XR should prioritize addressing this vulnerability to mitigate the associated high-severity risks.

CVE
CVE-2026-20277
Severity
HIGH
CVSS
8.2
EPSS
0.23%
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-2026-20277 are related to protection mechanism failure issues that are grouped under the Common Weakness Enumeration (CWE) CWE-693.