Cisco IOS XR Software
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- Network operating system
- Total vulnerabilities (90 days)
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As of 10/09/2026, Cisco IOS XR Software recorded 7 security vulnerabilities in the last 90 days, of which 7 are rated High or Critical. None of these vulnerabilities is actively exploited (KEV) according to CISA's catalog. CyStack recommends that organizations and individual users apply patches as soon as possible.
CyStack does not yet have sufficient official-source data to identify the latest version of Cisco IOS XR Software and determine which vulnerabilities affect that version.
CyStack VulnScan continuously discovers assets, validates vulnerabilities, and helps security teams prioritize remediation across the organization.
CVE-2026-20278Cisco IOS XR Software Security Hardening Release: September 2026CVE-2026-20280Cisco IOS XR Software Security Hardening Release: September 2026CVE-2026-20279Cisco IOS XR Software Security Hardening Release: September 2026CVE-2026-20275Cisco IOS XR Software Security Hardening Release: September 2026CVE-2026-20274Cisco IOS XR Software Security Hardening Release: September 2026| Vulnerability | Exploitation status | Fix | Published | Severity |
|---|---|---|---|---|
CVE-2026-20278Cisco IOS XR Software Security Hardening Release: September 2026 | Exploitation statusNot exploited | FixNo |
| SeverityHigh |
CVE-2026-20280Cisco IOS XR Software Security Hardening Release: September 2026 | Exploitation statusNot exploited | FixNo | Published09/02/2026 | SeverityHigh |
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CVE-2026-20279Cisco IOS XR Software Security Hardening Release: September 2026 | Exploitation statusNot exploited | FixNo | Published09/02/2026 | SeverityCritical |
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CVE-2026-20275Cisco IOS XR Software Security Hardening Release: September 2026 | Exploitation statusNot exploited | FixNo | Published09/02/2026 | SeverityHigh |
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CVE-2026-20274Cisco IOS XR Software Security Hardening Release: September 2026 | Exploitation statusNot exploited | FixNo | Published09/02/2026 | SeverityCritical |
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CVE-2026-20276Cisco IOS XR Software Security Hardening Release: September 2026 | Exploitation statusNot exploited | FixNo | Published09/02/2026 | SeverityHigh |
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CVE-2026-20277Cisco IOS XR Software Security Hardening Release: September 2026 | Exploitation statusNot exploited | FixNo | Published09/02/2026 | SeverityHigh |
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CVE-2026-20118Cisco IOS-XR NCS 5500 and NCS 5700 Egress Packet Network Interfaces Aligner Interrupt Denial of Service Vulnerability | Exploitation statusNot exploited | FixNo | Published03/11/2026 | SeverityMedium |
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CVE-2026-20046Cisco IOS XR Software CLI Privilege Escalation Vulnerability | Exploitation statusNot exploited | FixNo | Published03/11/2026 | SeverityHigh |
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CVE-2026-20074Cisco IOS XR Software Multi-Instance Intermediate System-to-Intermediate System Denial of Service Vulnerability | Exploitation statusNot exploited | FixNo | Published03/11/2026 | SeverityHigh |
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