CVSS 9.8 (critical) ยท published 2026-09-02
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.
Affected products (NVD): cisco ios_xr
Weakness: CWE-664
Source: NVD CVE-2026-20274
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