vulnerability · Wed 02 Sep 2026 · 17:17 UTC
Cisco IOS XR Software Security Hardening Release: September 2026
Filed UTCSource CSC ↗
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. …
Signals
as the pipeline stamped them- High
- Critical vulnerability — CVSS 9.8
- What to do
- Critical severity — schedule an urgent patch.
CVE
KEV from CISA · EPSS from FIRST| Id | KEV | EPSS | Reference |
|---|---|---|---|
| CVE-2026-20274 | — | 0.73% | NVD ↗ |
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