CVE-2026-20274 Details
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.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Sep 2, 2026References to Advisories, Solutions, and Tools
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Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-664 | Improper Control of a Resource Through its Lifetime | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| cisco ios xr | 6.5.25 6.5.26 6.5.28 6.5.29 6.5.31 6.5.32 6.5.33 6.5.35 6.5.90 6.5.351 6.5.352 6.5.353 6.7.1 6.7.2 6.7.3 6.7.4 6.7.35 6.8.1 6.8.2 6.9.1 6.9.2 7.0.0 7.0.1 7.0.2 7.0.11 7.0.12 7.0.14 7.0.90 7.1.1 7.1.2 7.1.3 7.1.15 7.1.25 7.2.0 7.2.1 7.2.2 7.2.12 7.3.1 7.3.2 7.3.3 7.3.4 7.3.5 7.3.6 7.3.15 7.3.16 7.3.27 7.4.1 7.4.2 7.4.15 7.4.16 7.5.1 7.5.2 7.5.3 7.5.4 7.5.5 7.5.12 7.5.52 7.6.1 7.6.2 7.6.3 7.6.15 7.7.1 7.7.2 7.7.21 7.8.1 7.8.2 7.8.12 7.8.22 7.8.23 7.9.1 7.9.2 7.9.21 7.10.1 7.10.2 7.11.1 7.11.2 7.11.21 24.1.1 24.1.2 24.2.1 24.2.2 24.2.11 24.2.20 24.2.21 24.3.1 24.3.2 24.3.20 24.3.30 24.4.1 24.4.2 24.4.10 24.4.15 24.4.30 25.1.1 25.1.2 25.1.30 25.2.1 25.2.2 25.2.15 25.2.30 25.3.1 25.3.15 25.4.1 25.4.2 25.4.30 25.4.201 26.1.1 26.1.2 26.2.1 26.2.100 26.2.101 |
CPE
Remediation
| |
Change History
6 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Sep 17, 2026 | Initial Analysis | [email protected] |
| Sep 15, 2026 | CVE Modified | CVE |
| Sep 4, 2026 | CVE Modified | [email protected] |
| Sep 3, 2026 | CVE Modified | CISA-ADP |
| Sep 2, 2026 | CVE Modified | CISA-ADP |
| Sep 2, 2026 | New CVE Received | [email protected] |