C3745-adventerprisek9-mz.124-25d.bin

Because Cisco legally permitted the use of real IOS images in emulators, this image is widely shared among students. However, it requires the emulation profile in Dynamips (GNS3’s underlying engine) with proper idle-pc tuning to avoid 100% CPU usage.

| CVE | Impact | |------|--------| | CVE-2016-6375 | DoS via malformed IGMP packet | | CVE-2017-3881 | Remote code execution via SNMP (if enabled) | | CVE-2018-0151 | IKEv1 DoS / memory leak | | CVE-2018-1530 | Crash via crafted BGP packet (if BGP enabled) | c3745-adventerprisek9-mz.124-25d.bin

This filename follows Cisco’s standard IOS naming convention and refers to a specific operating system for the Cisco 3745 series multiservice access router. Because Cisco legally permitted the use of real

Many CCIE candidates used this exact image in topologies with Frame Relay switches, DMVPN, and redistribution between OSPF and EIGRP. It remains common in older workbooks. Many CCIE candidates used this exact image in

If needed, delete old files: delete flash:c3745-old-image.bin