Product · KEV exposure
Cisco IOS XR known exploited vulnerabilities
We track 6 CVEs in Cisco IOS XR. All of them are on CISA's Known Exploited Vulnerabilities catalog, meaning CISA has evidence of exploitation in the wild (listed 2021–2022). The most recent is CVE-2022-20821, added to KEV on .
- CVEs tracked
- 6
- On CISA KEV
- 6
- Ransomware use
- 0
- Rated critical
- 0
Every Cisco IOS XR CVE we track
| CVE / Vulnerability | Severity | CVSS | EPSS | Added to KEV | Patch by |
|---|---|---|---|---|---|
| CVE-2022-20821 Cisco IOS XR Open Port Vulnerability | [ MEDIUM ] | 6.5 | 11.5% | ||
| CVE-2010-3035 Cisco IOS XR Border Gateway Protocol (BGP) Denial-of-Service Vulnerability | [ HIGH ] | 7.5 | 5.7% | ||
| CVE-2009-2055 Cisco IOS XR Border Gateway Protocol (BGP) Denial-of-Service Vulnerability | [ MEDIUM ] | 5.9 | 3.3% | ||
| CVE-2020-3569 Cisco IOS XR Software DVMRP Memory Exhaustion Vulnerability | [ HIGH ] | 8.6 | 3.3% | ||
| CVE-2020-3566 Cisco IOS XR Software DVMRP Memory Exhaustion Vulnerability | [ HIGH ] | 8.6 | 3.7% | ||
| CVE-2020-3118 Cisco IOS XR Software Discovery Protocol Format String Vulnerability | [ HIGH ] | 8.8 | 11.7% |
Sorted by date added to KEV. Severity and CVSS as stated by NVD or the vendor; EPSS from FIRST.org. "Patch by" is CISA's BOD 22-01 deadline for US federal agencies, a useful priority signal for everyone else. Machine-readable: /api/v1/vendors/cisco.json.
Other Cisco products
IOS and IOS XE · 21IOS · 12Adaptive Security Appliance (ASA) and Firepower Threat Defense (FTD) · 10Catalyst SD-WAN Manager · 6Small Business RV160, RV260, RV340, and RV345 Series Routers · 5Adaptive Security Appliance (ASA) · 4IOS XE · 4Identity Services Engine · 3IOS, IOS XR, and IOS XE · 3NX-OS · 3Secure Firewall Management Center (FMC) · 3
Every row links to its CVE record with the CISA required action, catalog coverage and primary sources. We describe impact and remediation only; no exploit code. See the full KEV tracker or compare KEV catalogs.