What is CVE-2021-36321?

CVE-2021-36321 is a high-severity vulnerability in Dell Networking X-Series, classified under Improper Input Validation. CVSS score: 7.5/10. Published 2021-11-20.

How severe is CVE-2021-36321?

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

Improper input validation in Dell Networking X-Series

CVE-2021-36321

Dell Networking X-Series firmware versions prior to 3.0.1.8 contain an improper input validation vulnerability. A remote unauthenticated attacker may potentially exploit this vulnerability by sending specially crafted data to trigger a denial of service.

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

Published 2021-11-20 · last modified 2026-06-17.

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.

EPSS exploit prediction

EPSS: 0.013 (69.8th percentile), scored 2026-10-20.

Low probability of exploitation in the next 30 days, but still tracked. 70th percentile — 69.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.013 · newest: 0.013 · change: 0.000

Affected products

Dell Networking X-Series — versions unspecified
Dell X1008
Dell X1008 Firmware
Dell X1008p
Dell X1008p Firmware
Dell X1018
Dell X1018 Firmware
Dell X1018p
Dell X1018p Firmware
Dell X1026

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

www.dell.com/support/kbdoc/en-us/000193230/dsa-2021-191-dell-networking-x-serie… (Patch, Vendor Advisory)

Frequently asked questions

What is CVE-2021-36321?: CVE-2021-36321 is a high-severity vulnerability in Dell Networking X-Series, classified under Improper Input Validation. CVSS score: 7.5/10. Published 2021-11-20.
How severe is CVE-2021-36321?: High severity. CVSS v3 base score is 7.5 out of 10.