cisco-sa-hardening-iosxr-qg64NcM: Cisco IOS XR Software Security Hardening Release: September 2026
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 software hardening releases that address multiple internally discovered vulnerabilities. These vulnerabilities were found during internal testing and are not known to be actively exploited. To assist customers in patching and streamline the disclosure process, Cisco has grouped these issues by their underlying vulnerability class — Common Weakness Enumeration (CWE) — and assigned a single Common Vulnerabilities and Exposures identifier (CVE ID) to each CWE grouping.Cisco has released software updates that address these vulnerabilities. There are no workarounds that address these vulnerabilities.This advisory is available at the following link:https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-hardening-iosxr-qg64NcM
Event History
Frequently Asked Questions
Are these vulnerabilities known to be under active exploitation?
No. The vulnerabilities were identified during Cisco internal testing and are not known to be actively exploited.
Is there a mitigation available if software updates cannot be installed immediately?
No. The advisory states that there are no workarounds for these vulnerabilities; Cisco software updates are the available remediation.
Are these issues assigned separate CVE IDs for every individual vulnerability?
No. Cisco groups the internally discovered issues by their underlying Common Weakness Enumeration (CWE) class and assigns one CVE ID to each CWE grouping.