PatchTheCVE: ios xrhttps://patchthecve.com/CVEs with upgrade or downgrade fix stepsCVE-2026-20280: As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco IOS XR Softwarhttps://patchthecve.com/cve/CVE-2026-20280.htmlhttps://patchthecve.com/cve/CVE-2026-20280.htmlFri, 18 Sep 2026 13:17:29 +0000HIGH 8.8: 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. CVE-2026-20276: As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco IOS XR Software enghttps://patchthecve.com/cve/CVE-2026-20276.htmlhttps://patchthecve.com/cve/CVE-2026-20276.htmlFri, 18 Sep 2026 13:17:28 +0000HIGH 8.6: 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. ThCVE-2026-20274: As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco IOS XR Software enghttps://patchthecve.com/cve/CVE-2026-20274.htmlhttps://patchthecve.com/cve/CVE-2026-20274.htmlThu, 17 Sep 2026 18:03:36 +0000CRITICAL 9.8: 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. Th