Three critical vulns demand your attention, one a make-me-root mess in Nexus 9000 Series Switches that you can mitigate, not fix.
Two of them are present in the Cisco IOS XR operating system that powers the company’s carrier-grade kit.
CVE-2026-20274 scores 9.8 on the ten-point CVSS scale and covers a buffet of buffering issues, the potential for out-of-bounds writes, and the chance to initialize resources with an insecure default.
CVE-2026-20279 is another 9.8-rated flaw. Cisco says it’s an improper access control problem that covers “improper certificate validation, missing authentication for critical function, missing authorization, and incorrect authorization.”
Read more…
Source: The Register
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