CVE-2023-36563: Microsoft WordPad Information Disclosure Vulnerability

Severity: medium (CVSS 5.5 v3.1)
Exploited in the wild: yes — in CISA KEV since 2023-10-10
EPSS: 20.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2023-10-10 · updated 2026-06-17
Weakness: CWE-20

Description

Microsoft WordPad Information Disclosure Vulnerability

Affected products

Microsoft Windows 10 Version 1507: before 10.0.10240.20232 — fixed in 10.0.10240.20232
Microsoft Windows 10 1607: before 10.0.14393.6351 — fixed in 10.0.14393.6351
Microsoft Windows 10: before 10.0.17763.4974 — fixed in 10.0.17763.4974
Microsoft Windows 10: before 10.0.19041.3570 — fixed in 10.0.19041.3570
Microsoft Windows 10: before 10.0.19045.3570 — fixed in 10.0.19045.3570
Microsoft Windows 11 21H2: before 10.0.22000.2538 — fixed in 10.0.22000.2538
Microsoft Windows 11: before 10.0.22621.2428 — fixed in 10.0.22621.2428
Microsoft Windows Server 2008: r2-sp1
Microsoft Windows Server 2012: r2
Microsoft Windows Server 2016: before 10.0.14393.6351 — fixed in 10.0.14393.6351
Microsoft Windows Server 2019: before 10.0.17763.4974 — fixed in 10.0.17763.4974
Microsoft Windows Server 2022: before 10.0.20348.2031 — fixed in 10.0.20348.2031
Microsoft Windows 10 Version 1507: from 10.0.10240.0 before 10.0.10240.20232 — fixed in 10.0.10240.20232
Microsoft Windows 10 1607: from 10.0.14393.0 before 10.0.14393.6351 — fixed in 10.0.14393.6351
Microsoft Windows 10: from 10.0.17763.0 before 10.0.17763.4974 — fixed in 10.0.17763.4974
Microsoft Windows 10: from 10.0.19043.0 before 10.0.19041.3570 — fixed in 10.0.19041.3570
Microsoft Windows 10: from 10.0.19045.0 before 10.0.19045.3570 — fixed in 10.0.19045.3570
Microsoft Windows 11 21H2: from 10.0.0 before 10.0.22000.2538 — fixed in 10.0.22000.2538
Microsoft Windows 11: from 10.0.22621.0 before 10.0.22621.2428 — fixed in 10.0.22621.2428
Microsoft Windows Server 2008 R2 Service Pack 1: from 6.1.7601.0 before 6.1.7601.26769 — fixed in 6.1.7601.26769
Microsoft Windows Server 2008 Service Pack 2: from 6.0.6003.0 before 6.0.6003.22317 — fixed in 6.0.6003.22317
Microsoft Windows Server 2012: from 6.2.9200.0 before 6.2.9200.24523 — fixed in 6.2.9200.24523
Microsoft Windows Server 2012 R2: from 6.3.9600.0 before 6.3.9600.21620 — fixed in 6.3.9600.21620
Microsoft Windows Server 2016: from 10.0.14393.0 before 10.0.14393.6351 — fixed in 10.0.14393.6351
Microsoft Windows Server 2019: from 10.0.17763.0 before 10.0.17763.4974 — fixed in 10.0.17763.4974
Microsoft Windows Server 2022: from 10.0.20348.0 before 10.0.20348.2031 — fixed in 10.0.20348.2031

How to fix

Upgrade to a fixed version: Microsoft Windows 10 Version 1507 10.0.10240.20232; Microsoft Windows 10 1607 10.0.14393.6351; Microsoft Windows 10 10.0.17763.4974; Microsoft Windows 10 10.0.19041.3570; Microsoft Windows 10 10.0.19045.3570; Microsoft Windows 11 21H2 10.0.22000.2538; Microsoft Windows 11 10.0.22621.2428; Microsoft Windows Server 2016 10.0.14393.6351; Microsoft Windows Server 2019 10.0.17763.4974; Microsoft Windows Server 2022 10.0.20348.2031; Microsoft Windows 10 Version 1507 10.0.10240.20232; Microsoft Windows 10 1607 10.0.14393.6351. Check the vendor advisory for mitigations.

References

Get alerted when CVE-2023-36563 or the next vulnerability affects your stack