CVE-2023-29336
Confirmed PUBLISHEDWin32k Elevation of Privilege Vulnerability
Recommended Action
Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.
At a Glance
Win32k Elevation of Privilege Vulnerability
- CVE Published
- May 09, 2023
- Exploitation Reported
- May 09, 2023
- CVSS
- 7.8 High
- EPSS
- 40.9%
Affected Versions
| Vendor | Product | Version | Status |
|---|---|---|---|
| Microsoft |
Windows 10 Version 1507
|
10.0.10240.0 to < 10.0.10240.19926 |
Affected |
| Microsoft |
Windows 10 Version 1607
|
10.0.14393.0 to < 10.0.14393.5921 |
Affected |
| Microsoft |
Windows Server 2016
|
10.0.14393.0 to < 10.0.14393.5921 |
Affected |
| Microsoft |
Windows Server 2016 (Server Core installation)
|
10.0.14393.0 to < 10.0.14393.5921 |
Affected |
| Microsoft |
Windows Server 2008 Service Pack 2
|
6.0.6003.0 to < 6.0.6003.22070 |
Affected |
| Microsoft |
Windows Server 2008 Service Pack 2 (Server Core installation)
|
6.0.6003.0 to < 6.0.6003.22070 |
Affected |
| Microsoft |
Windows Server 2008 Service Pack 2
|
6.0.6003.0 to < 6.0.6003.22070 |
Affected |
| Microsoft |
Windows Server 2008 R2 Service Pack 1
|
6.1.7601.0 to < 6.1.7601.26519 |
Affected |
| Microsoft |
Windows Server 2008 R2 Service Pack 1 (Server Core installation)
|
6.1.7601.0 to < 6.1.7601.26519 |
Affected |
| Microsoft |
Windows Server 2012
|
6.2.9200.0 to < 6.2.9200.24266 |
Affected |
| Microsoft |
Windows Server 2012 (Server Core installation)
|
6.2.9200.0 to < 6.2.9200.24266 |
Affected |
| Microsoft |
Windows Server 2012 R2
|
6.3.9600.0 to < 6.3.9600.20969 |
Affected |
| Microsoft |
Windows Server 2012 R2 (Server Core installation)
|
6.3.9600.0 to < 6.3.9600.20969 |
Affected |
CVE References
- Win32k Elevation of Privilege Vulnerability msrc.microsoft.com · Vendor Advisory https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-29336
Recommended Actions
- Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.
- Check enrichment artifacts for scanner coverage and available PoCs before rolling remediation validation.
- Use the Pro API to automate enrichment, telemetry, and workflow delivery for VM, SOC, and CTI pipelines.
Known Exploited Vulnerability Sources
Catalogues that list this CVE as a known exploited vulnerability.
Per-source evidence links for KEV attestations are available through the KEVIntel Pro API.
Learn about Pro API access| Source | Added |
|---|---|
| CISA First | 2023-05-09 00:00 UTC |
| CVE | 2026-06-03 10:06 UTC |
No detection artifacts or sensor request patterns are available for this CVE yet.
Check back as sensor telemetry and scanner integrations are updated.
Virtual Patch
Compensating WAF rules to help reduce exposure to this CVE. Rule content and deployable vendor exports are available with KEVIntel Enterprise.
KEVIntel does not currently have a virtual patch for this CVE. When available, KEVIntel virtual patches ship as deployable ModSecurity, Cloudflare, and AWS WAF rules.
Enterprise feature. Virtual patch rule content and deployable vendor exports (ModSecurity, Cloudflare, AWS WAF) are available to KEVIntel Enterprise users.
CVSS Scores
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Exploitation Status
Exploited in the wild
Recorded 2023-05-09 00:00:00 UTC · CISA
Proof of concept available
Recorded 2023-06-09 15:36:45 UTC · GitHub
Weaknesses (CWE)
-
Use After Free
Scanner Integrations
| Scanner | Reference | Detected |
|---|---|---|
| Nessus | https://www.tenable.com/plugins/nessus/175349 | Jun 02, 2025 |
Potential Proof of Concepts
These PoCs are unverified and could contain malware. Use at your own risk.
github · Created 2023-06-09 15:36:45 UTC · 21 stars
Timeline
Key exploitation, disclosure, scanner coverage, and KEV attestation events for this CVE.
-
10:06 UTC about 2 months ago10:06 UTC · about 2 months ago
KEV confirmed by CVE
Exploitation attested by an external source
-
09:26 UTC about 1 year ago09:26 UTC · about 1 year ago
Nessus plugin available
Scanner coverage available
-
15:36 UTC about 3 years ago15:36 UTC · about 3 years ago
Public PoC available
Public proof-of-concept code published
-
17:03 UTC about 3 years ago17:03 UTC · about 3 years ago
CVE published
Vulnerability disclosed publicly
-
00:00 UTC about 3 years ago00:00 UTC · about 3 years ago
Added to CISA KEV
Listed in the CISA Known Exploited Vulnerabilities catalog
-
22:34 UTC over 3 years ago22:34 UTC · over 3 years ago
CVE ID reserved
Identifier reserved by the CNA
Automate This Intelligence with the Pro API
Confidence scoring, exploit status, sensor telemetry, PoCs, scanner integrations, mentions, and tags are available programmatically for VM, SOC, and CTI workflows.
Pro API Example
GET /api/v2/pro/kevs/CVE-2023-29336
{
"cve_id": "CVE-2023-29336",
"title": "Win32k Elevation of Privilege Vulnerability",
"affected_vendor": "Microsoft",
"affected_product": "Windows 10 Version 1507, Windows 10 Version 1607, Windows Server 2016, Windows Server 2016 (Server Core installation), Windows Server 2008 Service Pack 2, Windows Server 2008 Service Pack 2 (Server Core installation), Windows Server 2008 Service Pack 2, Windows Server 2008 R2 Service Pack 1, Windows Server 2008 R2 Service Pack 1 (Server Core installation), Windows Server 2012, Windows Server 2012 (Server Core installation), Windows Server 2012 R2, Windows Server 2012 R2 (Server Core installation)",
"affected_versions": [
{ "vendor": "...", "product": "...", "status": "affected", "display_label": "..." }
],
"confidence": "Confirmed",
"cvss_score": 7.8,
"epss_score": 0.40919,
"exploit_status": {
"exploited_in_the_wild": true,
"active_exploitation_observed": false
},
"sensor_telemetry": { "...": "Pro API fields" },
"proof_of_concepts": [ "..." ],
"scanner_integrations": [ "..." ]
}