Onenote
CVE-2023-21721
MEDIUM
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A07:2025 - Authentication Failures
ASVS 5.0
V6 - Authentication Authentication mechanism validation
MITRE ATT&CK
2 techniques across 2 tactics: Defense Evasion, Initial Access The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
| Impact | CVSS score of 6.5 (MEDIUM). Attack characteristics: network attack vector, low complexity, low privileges required, no user interaction not required. |
| Exploit ScenarioDerived | A remote attacker could bypass authentication mechanisms to gain unauthorized access by sending crafted requests to the affected application. |
Get an e-mail when this CVE is exploited, patched or re-scored. Free account.
Alert meAnalysisAI
Microsoft OneNote Elevation of Privilege Vulnerability. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, low attack complexity. This Improper Authentication vulnerability could allow attackers to bypass authentication mechanisms to gain unauthorized access.
RemediationAI
A vendor patch is available. Apply the latest security update as soon as possible. Implement multi-factor authentication, enforce strong password policies, use proven authentication frameworks.
Affects your stack
Find out whether the stacks and servers you run are on an affected version.
Checking this CVE against your own stacks and servers is part of the Basic plan and up.
Technical ContextAI · show details
This vulnerability is classified as Improper Authentication (CWE-287), which allows attackers to bypass authentication mechanisms to gain unauthorized access. Affected products include: Microsoft Onenote.
Know when Onenote gets its next vulnerability
- Watch products and get an email when something new is published
- Check this CVE against your own stack and servers
- Exploit and PoC references, threat intelligence from 22 sources
No credit card · 7-day full trial
Severity by source
AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Primary rating from Vendor (microsoft) · only source for this CVE.
CVSS VectorVendor: microsoft
DescriptionCVE.org
Microsoft OneNote Elevation of Privilege Vulnerability
Threat Intelligence Overview
NVD
CVE.org
EPSS
VulDB
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Authentication bypass attacks exploit flaws in the verification mechanisms that control access to systems and applications.
Affected Products (CPE)CVE.org
Microsoft OneNote 2007 SP3 and Microsoft OneNote 2010 SP2 allow remote attackers to execute arbitrary code via a crafted
Microsoft OneNote 2007 SP3 allows remote attackers to execute arbitrary code via a crafted OneNote file that triggers cr
Microsoft OneNote 2007 SP3, 2010 SP2, 2013 SP1, 2013 RT SP1, 2016, and 2016 for Mac allow remote attackers to obtain sen
Microsoft Access 2007 SP3, Excel 2007 SP3, InfoPath 2007 SP3, OneNote 2007 SP3, PowerPoint 2007 SP3, Project 2007 SP3, P
A library injection vulnerability exists in Microsoft OneNote 16.83 for macOS. Rated high severity (CVSS 7.1), this vuln
Microsoft OneNote Spoofing Vulnerability. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable,
A remote code execution vulnerability exists in Microsoft Office when the software fails to properly handle objects in m
Incomplete list of disallowed inputs in Microsoft Office OneNote allows an unauthorized attacker to bypass a security fe
Microsoft OneNote Spoofing Vulnerability. Rated medium severity (CVSS 5.4), this vulnerability is remotely exploitable,
GitHub PoC
Exploit-DB