CVE-2021-3183

Name: CVE-2021-3183
Creator: NVD / NIST
Published: 2021-01-19T15:15:12.467+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 1.25%

Last modified Jun 17, 2026

CVE-2021-3183 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. Files.com Fat Client 3.3.6 allows authentication bypass because the client continues to have access after a logout and a removal of a login profile.. EPSS estimates a 1.25% chance of exploitation in the next 30 days.

Description

Files.com Fat Client 3.3.6 allows authentication bypass because the client continues to have access after a logout and a removal of a login profile.

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS Probability

1.25%

65.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-613

Affected Software

Vendor	Product	Versions
Files	Fat Client	3.3.6

References

https://seclists.org/fulldisclosure/2021/Jan/20Mailing List, Third Party Advisory
https://seclists.org/fulldisclosure/2021/Jan/20Mailing List, Third Party Advisory

Timeline

Published: Jan 19, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-3183?

Files.com Fat Client 3.3.6 allows authentication bypass because the client continues to have access after a logout and a removal of a login profile.

How severe is CVE-2021-3183?

CVE-2021-3183 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.25% probability of exploitation in the next 30 days.

How do I fix CVE-2021-3183?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-3183?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST