Cisco IOS XR Software
114 CVEs tracked. 4 of them are in CISA KEV.
This hub aggregates every CVE we track for Cisco IOS XR Software, a product in the networking infrastructure space. Use it to gauge the current risk picture and drill into individual advisories.
Cisco IOS XR Software CVEs per month
| Month | CVEs |
|---|---|
| 2024-10 | 0 |
| 2024-11 | 5 |
| 2024-12 | 0 |
| 2025-01 | 0 |
| 2025-02 | 1 |
| 2025-03 | 10 |
| 2025-04 | 0 |
| 2025-05 | 1 |
| 2025-06 | 0 |
| 2025-07 | 0 |
| 2025-08 | 0 |
| 2025-09 | 4 |
| 2025-10 | 0 |
| 2025-11 | 0 |
| 2025-12 | 0 |
| 2026-01 | 0 |
| 2026-02 | 0 |
| 2026-03 | 4 |
| 2026-04 | 0 |
| 2026-05 | 0 |
| 2026-06 | 0 |
| 2026-07 | 0 |
| 2026-08 | 0 |
| 2026-09 | 7 |
Severity
How the 114 CVEs score on CVSS. Severity is not exploitation: KEV is counted above.
- Critical5
- High57
- Medium52
Latest CVEs
The 15 most recently published vulnerabilities affecting Cisco IOS XR Software.
- CVE-2026-20278Cisco IOS XR Software Security Hardening Release: September 20268.8
- CVE-2026-20280Cisco IOS XR Software Security Hardening Release: September 20268.8
- CVE-2026-20279Cisco IOS XR Software Security Hardening Release: September 20269.8
- CVE-2026-20275Cisco IOS XR Software Security Hardening Release: September 20268.8
- CVE-2026-20274Cisco IOS XR Software Security Hardening Release: September 20269.8
- CVE-2026-20276Cisco IOS XR Software Security Hardening Release: September 20268.6
- CVE-2026-20277Cisco IOS XR Software Security Hardening Release: September 20268.2
- CVE-2026-20118Cisco IOS-XR NCS 5500 and NCS 5700 Egress Packet Network Interfaces Aligner Interrupt Denial of Service Vulnerability6.8
- CVE-2026-20046Cisco IOS XR Software CLI Privilege Escalation Vulnerability8.8
- CVE-2026-20040Cisco IOS XR Software CLI Privilege Escalation Vulnerability8.8
- CVE-2026-20074Cisco IOS XR Software Multi-Instance Intermediate System-to-Intermediate System Denial of Service Vulnerability7.4
- CVE-2025-20363A vulnerability in the web services of Cisco Secure Firewall Adaptive Security Appliance (ASA) Software, Cisco Secure Firewall Threat Defense (FTD) Software, Cisco IOS Software, Cisco IOS XE Softwa...9.0
- CVE-2025-20340Cisco IOS XR Address Resolution Protocol Broadcast Storm Vulnerability7.4
- CVE-2025-20159Cisco IOS XR Software Management Interface ACL Bypass Vulnerability5.3
- CVE-2025-20248Cisco IOS XR Software Image Verification Bypass Vulnerability6.0
Product grouping is registry-driven, with AI assist and human review. How it works