Cisco IOS XR ARP Broadcast Storm DoS Vulnerability (CVE-2021-3480) Advisory
Security Advisory
CVE-2021-3480
High
Cisco
Affected:
- Cisco IOS XR 7.1.1 and earlier
- Cisco IOS XR 7.2.1
- Cisco IOS XR 7.3.2
- Cisco IOS XR 7.4.0
- Cisco IOS XR 7.4.1
Fixed in:
- 6.2.1
Referenced CVEs:
CVE-2025-20340 · 7.4
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