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2025-09-24
Cisco IOS and IOS XE SNMP Subsystem Stack Overflow Vulnerability (CVE-2025-20352) Technical Advisory
[Affected Scope] All versions of Cisco IOS and Cisco IOS XE Software with active SNMP services
[Impact] Authenticated attackers can trigger a system reload (DoS) or execute arbitrary code with root privileges (RCE) via crafted SNMP packets
[Mitigation] Apply official Cisco software updates immediately, restrict SNMP access via ACLs, or disable unused SNMP services