Vulnerability Details : CVE-2021-34726
A vulnerability in the CLI of Cisco SD-WAN Software could allow an authenticated, local attacker to inject arbitrary commands to be executed with root-level privileges on the underlying operating system of an affected device. This vulnerability is due to insufficient input validation on certain CLI commands. An attacker could exploit this vulnerability by authenticating to an affected device and submitting crafted input to the CLI. The attacker must be authenticated as an administrative user to execute the affected commands. A successful exploit could allow the attacker to execute commands with root-level privileges.
Products affected by CVE-2021-34726
- cpe:2.3:a:cisco:sd-wan:*:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:sd-wan:*:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:sd-wan:*:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:sd-wan:*:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:sd-wan:*:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:sd-wan:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-34726
0.04%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 6 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-34726
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
7.2
|
HIGH | AV:L/AC:L/Au:N/C:C/I:C/A:C |
3.9
|
10.0
|
NIST | |
6.7
|
MEDIUM | CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H |
0.8
|
5.9
|
Cisco Systems, Inc. | |
6.7
|
MEDIUM | CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H |
0.8
|
5.9
|
NIST |
CWE ids for CVE-2021-34726
-
The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component.Assigned by: ykramarz@cisco.com (Secondary)
-
The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component.Assigned by: nvd@nist.gov (Primary)
References for CVE-2021-34726
-
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdwan-maapi-cmdinjec-znUYTuC
Cisco SD-WAN Software Command Injection VulnerabilityVendor Advisory
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