Product / Cisco
Cisco IOS XR in CISA KEV
Answer CISA's KEV catalog lists 6 vulnerabilities in Cisco IOS XR as of catalog 2026.09.23, 6.1% of Cisco's 99 entries. First added 2021-11-03, latest 2022-05-23; 0 ransomware-linked.
- KEV entries
- 6
- Ransomware: known
- 00%
- First added
- 2021-11-03
- Latest added
- 2022-05-23
- Median days to due
- 101
- Open deadlines
- 0federal
TAdditions by year
| Year | Added |
|---|---|
| 2021 | 3 |
| 2022 | 3 |
| 2023 | 0 |
| 2024 | 0 |
| 2025 | 0 |
| 2026 | 0 |
WWeaknesses
| CWE | Entries | Share |
|---|---|---|
| CWE-20 Improper input validation | 2 | 33.3% |
| CWE-400 Uncontrolled resource consumption | 2 | 33.3% |
| CWE-923 | 1 | 16.7% |
| CWE-134 | 1 | 16.7% |
EAll entries
| CVE | Vulnerability | Added | Due | Ransomware | CWE |
|---|---|---|---|---|---|
| CVE-2022-20821 | Cisco IOS XR Open Port Vulnerability | Unknown | CWE-923 | ||
| CVE-2010-3035 | Cisco IOS XR Border Gateway Protocol (BGP) Denial-of-Service Vulnerability | Unknown | CWE-20 | ||
| CVE-2009-2055 | Cisco IOS XR Border Gateway Protocol (BGP) Denial-of-Service Vulnerability | Unknown | CWE-20 | ||
| CVE-2020-3569 | Cisco IOS XR Software DVMRP Memory Exhaustion Vulnerability | Unknown | CWE-400 | ||
| CVE-2020-3566 | Cisco IOS XR Software DVMRP Memory Exhaustion Vulnerability | Unknown | CWE-400 | ||
| CVE-2020-3118 | Cisco IOS XR Software Discovery Protocol Format String Vulnerability | Unknown | CWE-134 |
Cite this
CISA's KEV catalog lists 6 vulnerabilities in Cisco IOS XR. Source: Telemetry analysis of the CISA Known Exploited Vulnerabilities catalog, version 2026.09.23 (released 2026-09-23). https://glide-telemetry.pages.dev/products/cisco-ios-xr/
Source: CISA KEV catalog v2026.09.23, released 2026-09-23. Windows end 2026-09-23.