Skip to content
brandefense.io
Request A Demo
Vulnerability Intelligence

CVE-2023-36563

MediumExploitedPublic exploit

Microsoft WordPad Information Disclosure Vulnerability

Published Oct 10, 2023 · Updated Oct 28, 2025

Key Facts

Patch immediately
  • CVE-2023-36563 is a medium-severity vulnerability (CVSS 5.5 v3.1) affecting Windows 10 1507 (Microsoft), Windows 10 1607 (Microsoft), Windows 10 1809 (Microsoft) and 22 more products.
  • It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Oct 10, 2023. Public exploit code is available.
  • EPSS estimates a 20% probability of exploitation in the next 30 days.
  • Fixed versions are available, including Windows 10 1507 10.0.10240.20232, Windows 10 1607 10.0.14393.6351, Windows 10 1809 10.0.17763.4974.
  • Brandefense priority: patch immediately, because it is listed as exploited in the wild.

CVSS v3.1

5.5

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

EPSS (30-day exploit likelihood)

20%

Higher than 97.4% 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-2023-36563 brief as a PDF

Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.

Description

Microsoft WordPad Information Disclosure Vulnerability

Known-Exploited Catalog Listings

CatalogAddedRemediation dueRansomware use
CISA KEVOct 10, 2023Oct 31, 2023Not reported
Industry KEV feedOct 10, 2023Oct 31, 2023Not reported
CIRCL KEVOct 10, 2023Oct 31, 2023Not reported
ENISA EUVDOct 10, 2023n/aNot reported

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

Affected Products

39 affected entries in total
ProductAffected versionsFixed in
Windows 10 1507MicrosoftSee advisory10.0.10240.20232
Windows 10 1607MicrosoftSee advisory10.0.14393.6351
Windows 10 1809MicrosoftSee advisory10.0.17763.4974
Windows 10 21h2MicrosoftSee advisory10.0.19041.3570
Windows 10 22h2MicrosoftSee advisory10.0.19045.3570
20 more affected products in the full CVE brief

Patched Releases

Windows 10 1507

10.0.10240.20232

Windows 10 1607

10.0.14393.6351

Windows 10 1809

10.0.17763.4974

Windows 10 21h2

10.0.19041.3570

Windows 10 22h2

10.0.19045.3570

Windows 11 21h2

10.0.22000.2538

Windows 11 22h2

10.0.22621.2428

Windows Server 2016

10.0.14393.6351

Windows Server 2019

10.0.17763.4974

Windows Server 2022

10.0.20348.2031

Windows 10 Version 1507

10.0.10240.20232

Windows 10 Version 1607

10.0.14393.6351

Windows 10 Version 1809

10.0.17763.4974

Windows 10 Version 21H2

10.0.19041.3570

Windows 10 Version 22H2

10.0.19045.3570

Windows 11 version 21H2

10.0.22000.2538

Windows 11 version 22H2

10.0.22621.2428

Windows Server 2008 Service Pack 2

6.0.6003.22317

Windows Server 2008 R2 Service Pack 1

6.1.7601.26769

Windows Server 2008 R2 Service Pack 1 (Server Core installation)

6.1.7601.26769

Windows Server 2008 Service Pack 2 (Server Core installation)

6.0.6003.22317

Windows Server 2012

6.2.9200.24523

Windows Server 2012 (Server Core installation)

6.2.9200.24523

Windows Server 2012 R2

6.3.9600.21620

Windows Server 2012 R2 (Server Core installation)

6.3.9600.21620

Timeline

  1. Publicly disclosed

    Oct 10, 2023

  2. Added to CISA KEV

    Oct 10, 2023

  3. Added to Industry KEV feed

    Oct 10, 2023

  4. Added to CIRCL KEV

    Oct 10, 2023

  5. Added to ENISA EUVD

    Oct 10, 2023

  6. Last updated

    Oct 28, 2025

Weakness Type

  • CWE-20 Improper Input Validation

References

FAQ

Common Questions.

Is CVE-2023-36563 Running On Your Attack Surface?

Brandefense maps vulnerabilities like this one to your internet-facing assets and tells you exactly where to patch.

Request A Demo