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CVE-2023-35311

Published: Jul 11, 2023Updated: Oct 28, 2025 Sources: CVE List NVD BDUCWE-367
NVD MITRE
8.8CVSSHIGH
EPSS Score
15.0%
Top 3.7%
CISA KEV
Active Exploitation
Since Jul 11, 2023
Exploits
No Known Exploits
Remediation
Patch Available

Description

Microsoft Outlook Security Feature Bypass Vulnerability

CVSS Vector Breakdown

AV:NAC:LPR:NUI:RS:UC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:RUser Interaction
Required
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-367

Affected Products

Microsoft 365 Apps for EnterpriseMicrosoft
Desktop App
Consumer Software / productivity
Microsoft Office LTSC 2021Microsoft
Desktop App
Consumer Software / productivity
Microsoft Office 2019Microsoft
Desktop App
Consumer Software / productivity
Microsoft Outlook 2016Microsoft
On-premDesktop App
Consumer Software / productivity
Microsoft Outlook 2013Microsoft
On-prem
Operating Systems / windows
microsoftcommercialUSOperating Systems
and 11 more affected products View all →

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

CISA Known Exploited Vulnerability
Added to KEV:Jul 11, 2023
Remediation due:Aug 1, 2023

Required action: Apply updates per vendor instructions or discontinue use of the product if updates are unavailable.

Official Patch Available

MITRE ATT&CK

1 technique
Privilege Escalation
View detailed technique mapping

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-35311
msrc.microsoft.com
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-35311
cisa.gov
https://www.cisa.gov/sites/default/files/csv/known_exploited_vulnerabilities.csv
cisa.gov

Timeline

Added to CISA KEV
Jul 11, 2023
Published
Jul 11, 2023
Last Updated
Oct 28, 2025

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