What is CVE-2021-36333?

CVE-2021-36333 is a medium-severity vulnerability in Dell Cloudlink, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 5.5/10. Published 2021-11-23.

How severe is CVE-2021-36333?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Buffer overflow in Dell Cloudlink

CVE-2021-36333

Dell EMC CloudLink 7.1 and all prior versions contain a Buffer Overflow Vulnerability. A local low privileged attacker, may potentially exploit this vulnerability, leading to an application crash.

Vulnerability class: Buffer Overflow

Published 2021-11-23 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.002 (10.7th percentile), scored 2026-10-20.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 11th percentile — 10.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000

Affected products

Dell Cloudlink — versions unspecified
Dell EMC Cloud Link

Weakness classification (CWE)

CWE-120 — Buffer Copy without Checking Size of Input (Classic Buffer Overflow)

References

www.dell.com/support/kbdoc/en-us/000193031/https-dellservices-lightning-force-c… (Broken Link)
www.dell.com/support/kbdoc/en-us/000193031/https-dellservices-lightning-force-c… (Patch, Vendor Advisory)

Frequently asked questions

What is CVE-2021-36333?: CVE-2021-36333 is a medium-severity vulnerability in Dell Cloudlink, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 5.5/10. Published 2021-11-23.
How severe is CVE-2021-36333?: Medium severity. CVSS v3 base score is 5.5 out of 10.