What is CVE-2023-21721?

CVE-2023-21721 is a medium-severity vulnerability in Microsoft Onenote For Android, classified under Improper Authentication. CVSS score: 6.5/10. Published 2023-02-14.

How severe is CVE-2023-21721?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Is CVE-2023-21721 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Auth bypass in Microsoft Onenote For Android

CVE-2023-21721

Microsoft OneNote Elevation of Privilege Vulnerability

Vulnerability class: Broken Authentication

EPSS: 0.061 (91.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C.

Affected products

Microsoft Onenote For Android — versions 16.0.1

Weakness classification (CWE)

CWE-287 — Improper Authentication

Public proof-of-concept exploits

References

Microsoft OneNote Elevation of Privilege Vulnerability (vendor-advisory)

Frequently asked questions

What is CVE-2023-21721?: CVE-2023-21721 is a medium-severity vulnerability in Microsoft Onenote For Android, classified under Improper Authentication. CVSS score: 6.5/10. Published 2023-02-14.
How severe is CVE-2023-21721?: Medium severity. CVSS v3 base score is 6.5 out of 10.
Is CVE-2023-21721 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.