#VU51781 OS Command Injection in Cisco Systems, Inc products - CVE-2021-1435
Published: March 30, 2021 / Updated: October 19, 2023
Vulnerability identifier: #VU51781
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:A/U:Clear
CVE-ID: CVE-2021-1435
CWE-ID: CWE-78
Exploitation vector: Remote access
Exploit availability:
The vulnerability is being exploited in the wild
Vulnerable software:
Cisco IOS XE
Cisco 2600 Series Multiservice Platforms
Cisco Catalyst 3850 Series Switches
Cisco Catalyst 3650 Series Switches
Cisco Catalyst 9300 Series Switches
Cisco Catalyst 9500 Series Switches
Cisco Catalyst 9200 Series Switches
Cisco IOS XE
Cisco 2600 Series Multiservice Platforms
Cisco Catalyst 3850 Series Switches
Cisco Catalyst 3650 Series Switches
Cisco Catalyst 9300 Series Switches
Cisco Catalyst 9500 Series Switches
Cisco Catalyst 9200 Series Switches
Software vendor:
Cisco Systems, Inc
Cisco Systems, Inc
Description
The vulnerability allows a remote user to execute arbitrary shell commands on the target system.
The vulnerability exists due to improper input validation in the web UI. A remote administrator can pass specially crafted data to the application and execute arbitrary OS commands on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Remediation
Install updates from vendor's website.