KEV Intelligence

Vulnerability report

Exploited in the wild Confirmed confidence In CISA KEV

CVE-2023-36563

Microsoft WordPad Information Disclosure Vulnerability

Microsoft / Windows 10 Version 1809 · affected before 10.0.17763.4974

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Severity
CVSS 6.5 · Medium
Confidence
Confirmed
Exploit status
Exploited in the wild
EPSS
20.7%
First observed
—
Last observed
—

Decision summary

What security teams need to know first

Direct answers before the deeper technical record.

What it is

CVE-2023-36563 is an unauthenticated Microsoft WordPad Information Disclosure Vulnerability.

Is it exploited?

Yes. KEV Intelligence tracks this CVE as a known exploited vulnerability. Confidence is confirmed.

Who is affected?

Microsoft / Windows 10 Version 1809 affected before 10.0.17763.4974.

What should we do?

Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.

Overview

Microsoft WordPad Information Disclosure Vulnerability

Microsoft WordPad Information Disclosure Vulnerability

Vendor Product Affected Status
Microsoft Windows 10 Version 1809 Before 10.0.17763.4974 Affected
Microsoft Windows 10 Version 1809 Before 10.0.17763.4974 Affected
Microsoft Windows Server 2019 Before 10.0.17763.4974 Affected
Microsoft Windows Server 2019 (Server Core installation) Before 10.0.17763.4974 Affected
Microsoft Windows Server 2022 Before 10.0.20348.2031 Affected
Microsoft Windows 11 version 21H2 Before 10.0.22000.2538 Affected
Microsoft Windows 10 Version 21H2 Before 10.0.19041.3570 Affected
Microsoft Windows 11 version 22H2 Before 10.0.22621.2428 Affected
Microsoft Windows 10 Version 22H2 Before 10.0.19045.3570 Affected
Microsoft Windows 10 Version 1507 Before 10.0.10240.20232 Affected
Microsoft Windows 10 Version 1607 Before 10.0.14393.6351 Affected
Microsoft Windows Server 2016 Before 10.0.14393.6351 Affected
Microsoft Windows Server 2016 (Server Core installation) Before 10.0.14393.6351 Affected
Microsoft Windows Server 2008 Service Pack 2 Before 6.0.6003.22317 Affected
Microsoft Windows Server 2008 Service Pack 2 (Server Core installation) Before 6.0.6003.22317 Affected
Microsoft Windows Server 2008 Service Pack 2 Before 6.0.6003.22317 Affected
Microsoft Windows Server 2008 R2 Service Pack 1 Before 6.1.7601.26769 Affected
Microsoft Windows Server 2008 R2 Service Pack 1 (Server Core installation) Before 6.1.7601.26769 Affected
Microsoft Windows Server 2012 Before 6.2.9200.24523 Affected
Microsoft Windows Server 2012 (Server Core installation) Before 6.2.9200.24523 Affected
Microsoft Windows Server 2012 R2 Before 6.3.9600.21620 Affected
Microsoft Windows Server 2012 R2 (Server Core installation) Before 6.3.9600.21620 Affected
View vendor advisory (opens in new tab)
Published
10 Oct 2023
Exploitation Reported
10 Oct 2023
Attack vector
Remote
Complexity
Low
Privileges
None
User interaction
Required

Tags

windows cisa nessus_scanner microsoft

CVE References

Exploitation evidence

Why KEV Intelligence marks this CVE as exploited

Third-party attestation and first-party sensor observation are shown separately so teams can judge the evidence chain.

Exploited in the wild

CISA

Recorded 10 Oct 2023

Independent exploitation attestation added to the KEV Intelligence record.

Known exploited vulnerability sources

Per-source evidence links for KEV attestations are available through the KEV Intelligence Pro API.

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Source Added
CISA First 2023-10-10 00:00 UTC

Detection

Operational artifacts and observed signals

Make the evidence actionable in scanner, SOC, and edge-control workflows.

Observed signals

Request targets
0
User-Agents
0

Raw values available in Pro and Enterprise.

Virtual patch status

No KEV Intelligence virtual patch is currently available. Future rules ship for ModSecurity, Cloudflare, and AWS WAF.

Learn about virtual patches →

Scanner Artifacts

Scanner and exploit-framework references linked to this CVE.

Scanner Reference Detected
Nessus https://www.tenable.com/plugins/nessus/182865 02 Jun 2025

Risk and context

Severity, weaknesses, and research context

CVSS v3.1

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

EPSS

20.7%

Weaknesses

Improper Input Validation CWE-20

Timeline

From disclosure to observed exploitation

  1. Nessus plugin available

    Scanner coverage available

  2. CVE published

    Vulnerability disclosed publicly

  3. Added to CISA KEV

    Listed in the CISA Known Exploited Vulnerabilities catalog

  4. CVE ID reserved

    Identifier reserved by the CNA

Pro API

Automate this intelligence

Confidence, exploit status, sensor telemetry, PoCs, scanner integrations, mentions, and tags are available programmatically for VM, SOC, and CTI workflows.

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  • Evidence confidence and provenance
  • First-party sensor telemetry
  • PoC and scanner references
  • Affected versions and enrichment
  • Automation-ready JSON delivery

GET /api/v2/pro/kevs/CVE-2023-36563

Free JSON includes basic KEV fields 
{
  "cve_id": "CVE-2023-36563",
  "confidence": "Confirmed",
  "cvss_score": 6.5,
  "cvss_estimated": false,
  "epss_score": 0.20719,
  "exploit_status": {
    "exploited_in_the_wild": true,
    "active_exploitation_observed": false
  },
  "sensor_telemetry": { "attempts": 0, "sensors": 0 }
}

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