CVE-2023-36761
MediumExploitedPublic exploitMicrosoft Word Information Disclosure Vulnerability
Published Sep 12, 2023 · Updated Oct 30, 2025
Key Facts
Patch immediately- CVE-2023-36761 is a medium-severity vulnerability (CVSS 6.5 v3.1) affecting 365 Apps (Microsoft), Office (Microsoft), Office Long Term Servicing Channel (Microsoft) and 6 more products.
- It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Sep 12, 2023. Public exploit code is available.
- EPSS estimates a 20% probability of exploitation in the next 30 days.
- Fixed versions are available, including Microsoft 365 Apps for Enterprise https://aka.ms/OfficeSecurityReleases, Microsoft Office 2019 https://aka.ms/OfficeSecurityReleases, Microsoft Office LTSC 2021 https://aka.ms/OfficeSecurityReleases.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
CVSS v3.1
6.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
EPSS (30-day exploit likelihood)
20%
Higher than 97.3% of all scored CVEs
Exploited in the wild
Yes
4 catalog listings
Public exploit code
Available
Proof-of-concept or weaponized module
Get the full CVE-2023-36761 brief as a PDF
Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.
Description
Microsoft Word Information Disclosure Vulnerability
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| CISA KEV | Sep 12, 2023 | Oct 3, 2023 | Not reported |
| Industry KEV feed | Sep 12, 2023 | Oct 3, 2023 | Not reported |
| CIRCL KEV | Sep 12, 2023 | Oct 3, 2023 | Not reported |
| ENISA EUVD | Sep 12, 2023 | n/a | Not reported |
Required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Affected Products
16 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| 365 AppsMicrosoft | See advisory | n/a |
| OfficeMicrosoft | 2019 | n/a |
| Office Long Term Servicing ChannelMicrosoft | 2021 | n/a |
| WordMicrosoft | 2013-sp1, 2016 | n/a |
| Microsoft 365 Apps for Enterprise | >= 16.0.1 | https://aka.ms/OfficeSecurityReleases |
Patched Releases
Microsoft 365 Apps for Enterprise
https://aka.ms/OfficeSecurityReleases
Microsoft Office 2019
https://aka.ms/OfficeSecurityReleases
Microsoft Office LTSC 2021
https://aka.ms/OfficeSecurityReleases
Microsoft Word 2013 Service Pack 1
15.0.5589.1001
Microsoft Word 2016
16.0.5413.1000
Timeline
Publicly disclosed
Sep 12, 2023
Added to CISA KEV
Sep 12, 2023
Added to Industry KEV feed
Sep 12, 2023
Added to CIRCL KEV
Sep 12, 2023
Added to ENISA EUVD
Sep 12, 2023
Last updated
Oct 30, 2025
Weakness Type
- CWE-20 Improper Input Validation
References
- patchMicrosoft Word Information Disclosure Vulnerability
- exploitVulnCheck exploitation report
- exploitVulnCheck exploitation report
- exploitVulnCheck exploitation report
- exploitVulnCheck exploitation report
FAQ
Common Questions.
Microsoft Word Information Disclosure Vulnerability
Affected: 365 Apps (Microsoft); Office (Microsoft) versions 2019; Office Long Term Servicing Channel (Microsoft) versions 2021, among others. The full list is in the CVE brief.
It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Sep 12, 2023.
Yes. It was added on Sep 12, 2023 with a federal remediation due date of Oct 3, 2023.
Public exploit code is available.
Fixed versions are available, including Microsoft 365 Apps for Enterprise https://aka.ms/OfficeSecurityReleases, Microsoft Office 2019 https://aka.ms/OfficeSecurityReleases, Microsoft Office LTSC 2021 https://aka.ms/OfficeSecurityReleases.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
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