Cisco Cisco ISR 4451
- The Cisco ISR 4451 is a high-performance, modular router designed for small to medium-sized businesses and enterprise branch offices.
Specifications
- OS
- Cisco IOS XE
- CPU
- 4-core 2.4 GHz
- LAN
- Gigabit Ethernet
- RAM
- 4 GB
- USB
- 2x USB 3.0
- VPN
- Yes
- WAN
- Gigabit Ethernet
- Rack
- 1U
- Flash
- 4 GB
- SD-WAN
- Yes
- LAN Ports
- 4x GE
- WAN Ports
- 4x GE
- Management
- Console, AUX, USB
- Throughput
- 1 Gbps to 2 Gbps
Potential Threats
18 Known CVEs
Known CVE Vulnerabilities (18)
A vulnerability in multiple Cisco Unified Communications and Contact Center Solutions products could allow an authenticated, local attacker to elevate...
A vulnerability in the Out-of-Band Access Point (AP) Image Download, the Clean Air Spectral Recording, and the client debug bundles features of Cisco...
A vulnerability in confederation implementation for the Border Gateway Protocol (BGP) in Cisco IOS XR Software could allow an unauthenticated, re...
A vulnerability in the health monitoring diagnostics of Cisco Nexus 3000 Series Switches and Cisco Nexus 9000 Series Switches in standalone NX-OS mode...
A vulnerability in the Remote Access VPN (RAVPN) service of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD)...
A vulnerability in the web-based management interface of Cisco Secure Firewall Management Center (FMC) Software, formerly Firepower Management Center...
A vulnerability in the web-based management interface of Cisco Firepower Management Center (FMC) Software could allow an unauthenticated, remote attac...
A vulnerability in the web-based management interface of Cisco Small Business RV340, RV340W, RV345, and RV345P Dual WAN Gigabit VPN Routers could allo...
A vulnerability in Cisco Nexus Dashboard Fabric Controller (NDFC), formerly Cisco Data Center Network Manager (DCNM), could allow an authenticated, re...
A vulnerability in the Protocol Independent Multicast (PIM) feature of Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause...
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FAQ
The most common default credentials for Cisco Cisco ISR 4451 are listed in the table above. Always change these immediately after setup.
The default username for Cisco Cisco ISR 4451 is typically "admin". The full list of default credentials including username, password, access type and port is shown in the table on this page.
Log in to the admin panel using the default credentials listed above. Navigate to Administration → Password or System → Account settings. Enter the current password and set a new strong password. Save the changes.
Locate the Reset button (usually a small pinhole on the back/bottom of the device). Hold it for 10-30 seconds while powered on until the LEDs flash. The device will reboot with default settings.
No. Default credentials are publicly known and frequently exploited by automated scanners. Change the admin password immediately after first login.
Most routers are accessible at 192.168.1.1 or 192.168.0.1. Open a browser on a connected device and type the IP in the address bar to reach the admin login page.
Log in to the router admin panel at the default IP address. Go to Wireless or Wi-Fi settings. Find the WPA2/WPA3 passphrase field and update it. Save and reconnect your devices.
Change the default admin password and Wi-Fi password immediately. Disable WPS (Wi-Fi Protected Setup) — it is vulnerable to brute-force attacks. Enable WPA3 encryption if supported. Turn off remote management unless needed. Keep firmware updated.
Cisco Cisco ISR 4451 has 18 known CVE vulnerabilities documented in our database. The full list with severity ratings is shown on this page. Apply the latest firmware update from the manufacturer to address known issues.
