Cisco IOS XE NBAR Denial of Service Vulnerability (CVE-2020-3561) Advisory

sec.cloudapps.cisco.com 2025-09-26 查看中文 →

Security Advisory CVE-2020-3561 High Cisco

Affected:

Cisco IOS XE Software (specifically on 1100 Integrated Services Routers, 4000 Series Integrated Services Routers, ASR 900 Series Aggregation Services Routers, ASR 1000 Series Aggregation Services Routers, Catalyst 1131I Dual-Band Access Points, Catalyst 1832I Gigabit Switches, Catalyst 2960X Series Edge Platforms, Catalyst 8500 Fabric Platforms, Catalyst 9300L Edge Platforms, Catalyst 9500 TrustSec Enabled Routers with NBAR enabled)
Cisco IOS Software (not affected)
Cisco IOS XR Software (not affected)
Cisco NX-OS Software (not affected)

Referenced CVEs: CVE-2025-20315 · 8.6

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