What is CVE-2021-3339?

CVE-2021-3339 is a medium-severity vulnerability in Microsoft Modernflow, classified under Improper Authentication. CVSS score: 4.3/10. Published 2021-02-19.

How severe is CVE-2021-3339?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Auth bypass in Microsoft Modernflow

CVE-2021-3339

ModernFlow before 1.3.00.208 does not constrain web-page access to members of a security group, as demonstrated by the Search Screen and the Profile Screen.

Vulnerability class: Broken Authentication

EPSS: 0.019 (78.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.

Affected products

Microsoft Modernflow
N/a — versions n/a

Weakness classification (CWE)

CWE-287 — Improper Authentication

References

cve@mitre.org (Product, x_refsource_MISC)
cve@mitre.org (x_refsource_MISC, Broken Link)

Frequently asked questions

What is CVE-2021-3339?: CVE-2021-3339 is a medium-severity vulnerability in Microsoft Modernflow, classified under Improper Authentication. CVSS score: 4.3/10. Published 2021-02-19.
How severe is CVE-2021-3339?: Medium severity. CVSS v3 base score is 4.3 out of 10.