Risk | Low |
Patch available | YES |
Number of vulnerabilities | 1 |
CVE-ID | CVE-2021-1435 |
CWE-ID | CWE-78 |
Exploitation vector | Network |
Public exploit | Vulnerability #1 is being exploited in the wild. |
Vulnerable software Subscribe |
Cisco IOS XE Operating systems & Components / Operating system Cisco 2600 Series Multiservice Platforms Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco Catalyst 3850 Series Switches Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco Catalyst 3650 Series Switches Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco Catalyst 9300 Series Switches Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco Catalyst 9500 Series Switches Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco Catalyst 9200 Series Switches Hardware solutions / Routers & switches, VoIP, GSM, etc |
Vendor | Cisco Systems, Inc |
Security Bulletin
This security bulletin contains one low risk vulnerability.
EUVDB-ID: #VU51781
Risk: Low
CVSSv3.1: 6.3 [CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H/E:H/RL:O/RC:C]
CVE-ID: CVE-2021-1435
CWE-ID:
CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Exploit availability: No
DescriptionThe 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.
MitigationInstall updates from vendor's website.
Vulnerable software versionsCisco IOS XE: Gibraltar 16.11.1
Cisco 2600 Series Multiservice Platforms: All versions
Cisco Catalyst 3850 Series Switches: All versions
Cisco Catalyst 3650 Series Switches: All versions
Cisco Catalyst 9300 Series Switches: All versions
Cisco Catalyst 9500 Series Switches: All versions
Cisco Catalyst 9200 Series Switches: All versions
External linksQ & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote authenticated privileged user via the Internet.
Is there known malware, which exploits this vulnerability?
Yes. This vulnerability is being exploited in the wild.