Improper input validation in Cisco iOS Xe Software

CVE-2021-1432

A vulnerability in the CLI of Cisco IOS XE SD-WAN Software could allow an authenticated, local attacker to execute arbitrary commands on the underlying operating system as the root user. The attacker must be authenticated on the affected device as a low-privileged user to exploit this vulnerability. This vulnerability is due to insufficient validation of user-supplied input. An attacker could exploit this vulnerability by injecting arbitrary commands to a file as a lower-privileged user. The commands are then executed on the device by the root user. A successful exploit could allow the attacker to execute arbitrary commands as the root user.

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

EPSS: 0.003 (26.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.3 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2021-1432?
CVE-2021-1432 is a high-severity vulnerability in Cisco iOS Xe Software, classified under Improper Input Validation. CVSS score: 7.3/10. Published 2021-03-24.
How severe is CVE-2021-1432?
High severity. CVSS v3 base score is 7.3 out of 10.