What is CVE-2021-1431?

CVE-2021-1431 is a high-severity vulnerability in Cisco iOS Xe Software, classified under Improper Input Validation. CVSS score: 7.5/10. Published 2021-03-24.

How severe is CVE-2021-1431?

High severity. CVSS v3 base score is 7.5 out of 10.

Improper input validation in Cisco iOS Xe Software

CVE-2021-1431

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.

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

EPSS: 0.016 (73.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Cisco Ios Xe Software — versions n/a
Cisco Ios_xe — versions 3.15.1xbs, 3.15.2xbs, 16.11.1

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

psirt@cisco.com (x_refsource_CISCO, vendor-advisory, Vendor Advisory)

Frequently asked questions

What is CVE-2021-1431?: CVE-2021-1431 is a high-severity vulnerability in Cisco iOS Xe Software, classified under Improper Input Validation. CVSS score: 7.5/10. Published 2021-03-24.
How severe is CVE-2021-1431?: High severity. CVSS v3 base score is 7.5 out of 10.