CVE-2021-1431: cisco cisco ios xe software Improper Input Validation

Vulnerability summary

CVE-2021-1431 is a high (CVSS 7.8) Improper Input Validation vulnerability in cisco cisco ios xe software. EPSS estimates a 1.66% chance of exploitation in the next 30 days, higher than 76.2% of scored vulnerabilities.

Timeline

1. 24-03-2021
   PublishedVulnerability first disclosed.
2. 08-11-2024
   Last modifiedVulnerability information updated.

Description

A vulnerability in the vDaemon process of Cisco IOS XE SD-WAN Software could allow an unauthenticated, remote attacker to cause a device to reload, resulting a denial of service (DoS) condition. This vulnerability is due to insufficient handling of malformed packets. An attacker could exploit this vulnerability by sending crafted traffic to an affected device. A successful exploit could allow the attacker to cause the device to reload, resulting in a DoS condition.

• CWE-20Improper Input ValidationThe product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.