CVE-2026-20274

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.

• cisco ios xr 6.5.25 • cisco ios xr 6.5.26 • cisco ios xr 6.5.28 • cisco ios xr 6.5.29 • cisco ios xr 6.5.31 • cisco ios xr 6.5.32 • cisco ios xr 6.5.33 • cisco ios xr 6.5.35 • cisco ios xr 6.5.90 • cisco ios xr 6.5.351 • cisco ios xr 6.5.352 • cisco ios xr 6.5.353 • cisco ios xr 6.7.1 • cisco ios xr 6.7.2 • cisco ios xr 6.7.3 • cisco ios xr 6.7.4 • cisco ios xr 6.7.35 • cisco ios xr 6.8.1 • cisco ios xr 6.8.2 • cisco ios xr 6.9.1 • cisco ios xr 6.9.2 • cisco ios xr 7.0.0 • cisco ios xr 7.0.1 • cisco ios xr 7.0.2 • cisco ios xr 7.0.11 • cisco ios xr 7.0.12 • cisco ios xr 7.0.14 • cisco ios xr 7.0.90 • cisco ios xr 7.1.1 • cisco ios xr 7.1.2 • cisco ios xr 7.1.3 • cisco ios xr 7.1.15 • cisco ios xr 7.1.25 • cisco ios xr 7.2.0 • cisco ios xr 7.2.1 • cisco ios xr 7.2.2 • cisco ios xr 7.2.12 • cisco ios xr 7.3.1 • cisco ios xr 7.3.2 • cisco ios xr 7.3.3 • cisco ios xr 7.3.4 • cisco ios xr 7.3.5 • cisco ios xr 7.3.6 • cisco ios xr 7.3.15 • cisco ios xr 7.3.16 • cisco ios xr 7.3.27 • cisco ios xr 7.4.1 • cisco ios xr 7.4.2 • cisco ios xr 7.4.15 • cisco ios xr 7.4.16 • cisco ios xr 7.5.1 • cisco ios xr 7.5.2 • cisco ios xr 7.5.3 • cisco ios xr 7.5.4 • cisco ios xr 7.5.5 • cisco ios xr 7.5.12 • cisco ios xr 7.5.52 • cisco ios xr 7.6.1 • cisco ios xr 7.6.2 • cisco ios xr 7.6.3 … and 51 more