6.5Medium

CVE-2023-36893Microsoft Outlook Spoofing Vulnerability

Microsoft Microsoft 365 Apps for Enterprise; Microsoft Microsoft Office 2019; Microsoft Microsoft Office LTSC 2021; Microsoft Microsoft Outlook 2013 Service Pack 1 Published: 2023-08-08 20:08 (3 years ago)

Description

Microsoft Outlook Spoofing Vulnerability

Weakness (CWE): CWE-20

Data: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Published as the sources state it, in English.

Affected products and versions

Vendor	Product	Versions
microsoft	365 apps	16.0.1 – < https://aka.ms/OfficeSecurityReleases
Microsoft	Microsoft 365 Apps for Enterprise	16.0.1 – < https://aka.ms/OfficeSecurityReleases
Microsoft	Microsoft Office 2019	19.0.0 – < https://aka.ms/OfficeSecurityReleases
Microsoft	Microsoft Office LTSC 2021	16.0.1 – < https://aka.ms/OfficeSecurityReleases
Microsoft	Microsoft Outlook 2013 Service Pack 1	15.0.0.0 – < 15.0.5579.1000
Microsoft	Microsoft Outlook 2016	16.0.0.0 – < 16.0.5408.1000
microsoft	office 2019	19.0.0 – < https://aka.ms/OfficeSecurityReleases
microsoft	office 2021	16.0.1 – < https://aka.ms/OfficeSecurityReleases
microsoft	outlook 2013	15.0.0.0 – < 15.0.5579.1000
microsoft	outlook 2016	16.0.0.0 – < 16.0.5408.1000

References and patches

Microsoft Outlook Spoofing Vulnerability vendor-advisorypatch

CVSS score

6.5Medium

Source: microsoft · CVSS 3.1

Attack vector: Network
Attack complexity: Low
Privileges required: None
User interaction: Required
Scope: Unchanged
Confidentiality: High
Integrity: None
Availability: None

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C

EPSS (chance of exploitation in 30 days)

2.19%

higher than 83% of all CVEs

CISA assessment (SSVC)

Exploitation: none
Automatable: no
Technical impact: partial

Timeline

ID reserved2023-06-27
Published2023-08-08 20:08
Reached IP-DB2026-10-24 23:53
Last updated2026-08-10 18:11

Assigned by (CNA): microsoft

View at source: CVE.org · NVD

Get told when these products get a new vulnerability

Turn on email alerts

Free · with an account · switch off any time

Recent CVEs in the same product — Microsoft Office / 365 Apps

8.8High

CVE-2026-120003 2 days ago

Microsoft Office Remote Code Execution Vulnerability

Microsoft Microsoft 365 Apps for Enterprise; Microsoft Microsoft Office 365 for Mac; Microsoft Microsoft Office LTSC 2021; Microsoft Microsoft Office LTSC 2024

Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code over a network.

8.8High

CVE-2026-120001 2 days ago

Microsoft Office PowerPoint Remote Code Execution Vulnerability

Microsoft Microsoft 365 Apps for Enterprise; Microsoft Microsoft Office 365 for Mac; Microsoft Microsoft Office LTSC 2021; Microsoft Microsoft Office LTSC 2024

Heap-based buffer overflow in Microsoft Office PowerPoint allows an unauthorized attacker to execute code over a network.

6.5Medium

CVE-2026-119999 2 days ago

Microsoft Office Excel Information Disclosure Vulnerability

Microsoft Microsoft 365 Apps for Enterprise; Microsoft Microsoft Office 365 for Mac; Microsoft Microsoft Office LTSC 2021; Microsoft Microsoft Office LTSC 2024

Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information over a network.

7.8High

CVE-2026-119997 2 days ago

Microsoft Office Outlook Remote Code Execution Vulnerability

Microsoft Microsoft 365 Apps for Enterprise; Microsoft Microsoft Office LTSC 2021; Microsoft Microsoft Office LTSC 2024

Heap-based buffer overflow in Microsoft Office Outlook allows an unauthorized attacker to execute code locally.

6.5Medium

CVE-2026-119998 2 days ago

Microsoft Office Security Feature Bypass Vulnerability

Microsoft Microsoft 365 Apps for Enterprise; Microsoft Microsoft Office LTSC 2021; Microsoft Microsoft Office LTSC 2024

Product ui does not warn user of unsafe actions in Microsoft Office allows an unauthorized attacker to bypass a security feature over a network.

7.5High

CVE-2026-119995 2 days ago

Microsoft Office Outlook Remote Code Execution Vulnerability

Microsoft Microsoft 365 Apps for Enterprise; Microsoft Microsoft Office LTSC 2021; Microsoft Microsoft Office LTSC 2024

Heap-based buffer overflow in Microsoft Office Outlook allows an unauthorized attacker to execute code over a network.