Security feature bypass

A vulnerability in a diagnostic command for the Plug-and-Play PnP subsystem of Cisco IOS XE Software could allow an authenticated, local attacker to elevate privileges to the level of an Administrator user level 15 on an affected device. The vulnerability is due to insufficient protection of...

CVE-2021-1377 Cisco IOS and IOS XE Software ARP Resource Management Exhaustion Denial of Service Vulnerability

A vulnerability in Address Resolution Protocol ARP management of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to prevent an affected device from resolving ARP entries for legitimate hosts on the connected subnets. This vulnerability exists because A...

CVE-2021-1382 Cisco IOS XE SD-WAN Software Command Injection Vulnerability

A vulnerability in the CLI of Cisco IOS XE SD-WAN Software could allow an authenticated, local attacker to inject arbitrary commands to be executed with root privileges on the underlying operating system. This vulnerability is due to insufficient input validation on certain CLI commands. An...

CVE-2021-1384

Summary of vulnerability details : CVE-2021-1384 affects Cisco IOx in Cisco IOS XE Software, enabling an authenticated, remote attacker to inject commands into the underlying OS as root. The root cause is incomplete validation of fields in application packages loaded onto IOx, exploitable by load...

CVE-2021-1403 Cisco IOS XE Software Web UI Cross-Site WebSocket Hijacking Vulnerability

A vulnerability in the web UI feature of Cisco IOS XE Software could allow an unauthenticated, remote attacker to conduct a cross-site WebSocket hijacking CSWSH attack and cause a denial of service DoS condition on an affected device. This vulnerability is due to insufficient HTTP protections in...

CVE-2021-1453

Cisco IOS XE Software for the Catalyst 9000 Family is affected by CVE-2021-1453. The issue is in the image verification function during the initial boot, where an improper check of digital signatures on system image files could allow an unauthenticated, physical attacker to load unsigned software...

CVE-2021-1452 Cisco IOS XE ROM Monitor Software for Cisco Industrial Switches OS Command Injection Vulnerability

A vulnerability in the ROM Monitor ROMMON of Cisco IOS XE Software for Cisco Catalyst IE3200, IE3300, and IE3400 Rugged Series Switches, Cisco Catalyst IE3400 Heavy Duty Series Switches, and Cisco Embedded Services 3300 Series Switches could allow an unauthenticated, physical attacker to execute...

CVE-2021-1451 Cisco IOS XE Software Easy Virtual Switching System Arbitrary Code Execution Vulnerability

A vulnerability in the Easy Virtual Switching System VSS feature of Cisco IOS XE Software for Cisco Catalyst 4500 Series Switches and Cisco Catalyst 4500-X Series Switches could allow an unauthenticated, remote attacker to execute arbitrary code on the underlying Linux operating system of an...

CVE-2021-1442 Cisco IOS XE Software Plug-and-Play Privilege Escalation Vulnerability

A vulnerability in a diagnostic command for the Plug-and-Play PnP subsystem of Cisco IOS XE Software could allow an authenticated, local attacker to elevate privileges to the level of an Administrator user level 15 on an affected device. The vulnerability is due to insufficient protection of...

Cisco IOS XE Software Plug-and-Play Privilege Escalation Vulnerability

A vulnerability in a diagnostic command for the Plug-and-Play PnP subsystem of Cisco IOS XE Software could allow an authenticated, local attacker to elevate privileges to the level of an Administrator user level 15 on an affected device. The vulnerability is due to insufficient protection of...

CVE-2021-1451

A vulnerability in the Easy Virtual Switching System VSS feature of Cisco IOS XE Software for Cisco Catalyst 4500 Series Switches and Cisco Catalyst 4500-X Series Switches could allow an unauthenticated, remote attacker to execute arbitrary code on the underlying Linux operating system of an...

CVE-2021-1436

A vulnerability in the CLI of Cisco IOS XE SD-WAN Software could allow an authenticated, local attacker to conduct path traversal attacks and obtain read access to sensitive files on an affected system. This vulnerability is due to insufficient validation of user-supplied input. An attacker could...

CVE-2021-1281

A vulnerability in CLI management in Cisco IOS XE SD-WAN Software could allow an authenticated, local attacker to access the underlying operating system as the root user. This vulnerability is due to the way the software handles concurrent CLI sessions. An attacker could exploit this vulnerabilit...

CVE-2021-1454

Multiple vulnerabilities in the CLI of Cisco IOS XE SD-WAN Software could allow an authenticated, local attacker to access the underlying operating system with root privileges. These vulnerabilities are due to insufficient input validation of certain CLI commands. An attacker could exploit these...

CVE-2021-1356

Multiple vulnerabilities in the web UI of Cisco IOS XE Software could allow an authenticated, remote attacker with read-only privileges to cause the web UI software to become unresponsive and consume vty line instances, resulting in a denial of service DoS condition. These vulnerabilities are due...

Cisco IOS XE Software Web UI Cross-Site WebSocket Hijacking Vulnerability

A vulnerability in the web UI feature of Cisco IOS XE Software could allow an unauthenticated, remote attacker to conduct a cross-site WebSocket hijacking CSWSH attack and cause a denial of service DoS condition on an affected device. This vulnerability is due to insufficient HTTP protections in...

Cisco IOS XE SD-WAN Software Privilege Escalation Vulnerability

A vulnerability in CLI management in Cisco IOS XE SD-WAN Software could allow an authenticated, local attacker to access the underlying operating system as the root user. This vulnerability is due to the way the software handles concurrent CLI sessions. An attacker could exploit this vulnerabilit...

Cisco IOS XE Software Fast Reload Vulnerabilities

Multiple vulnerabilities in the fast reload feature of Cisco IOS XE Software running on Cisco Catalyst 3650, Cisco Catalyst 3850, Cisco Catalyst 9300, and Cisco Catalyst 9300L Series Switches could allow an authenticated, local attacker to either execute arbitrary code on the underlying operating...

CVE-2021-1434

A vulnerability in the CLI of Cisco IOS XE SD-WAN Software could allow an authenticated, local attacker to overwrite arbitrary files in the underlying file system. This vulnerability is due to insufficient validation of the parameters of a specific CLI command. An attacker could exploit this...

CVE-2021-1446

A vulnerability in the DNS application layer gateway ALG functionality used by Network Address Translation NAT in Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause an affected device to reload. The vulnerability is due to a logic error that occurs when an affected...