CVE-2019-0803
Confirmed PUBLISHEDAn elevation of privilege vulnerability exists in Windows when the Win32k component fails to properly handle objects in memory, aka 'Win32k...
Recommended Action
Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.
At a Glance
An elevation of privilege vulnerability exists in Windows when the Win32k component fails to properly handle objects in memory, aka 'Win32k Elevation of Privilege Vulnerability'. This CVE ID is unique from CVE-2019-0685, CVE-2019-0859.
- CVE Published
- Apr 09, 2019
- Exploitation Reported
- Nov 03, 2021
- CVSS
- 7.8 High
- EPSS
- 45.2%
Affected Versions
38 version rows · page 2 of 2
| Vendor | Product | Version | Status |
|---|---|---|---|
| Microsoft |
Windows Server
|
2012 (Core installation) |
Affected |
| Microsoft |
Windows Server
|
2012 R2 |
Affected |
| Microsoft |
Windows Server
|
2012 R2 (Core installation) |
Affected |
| Microsoft |
Windows Server
|
2016 |
Affected |
| Microsoft |
Windows Server
|
2016 (Core installation) |
Affected |
| Microsoft |
Windows Server
|
version 1709 (Core Installation) |
Affected |
| Microsoft |
Windows Server
|
version 1803 (Core Installation) |
Affected |
| Microsoft |
Windows Server
|
2019 |
Affected |
| Microsoft |
Windows Server
|
2019 (Core installation) |
Affected |
| Microsoft |
Windows Server
|
2008 for Itanium-Based Systems Service Pack 2 |
Affected |
| Microsoft |
Windows Server
|
2008 for 32-bit Systems Service Pack 2 |
Affected |
| Microsoft |
Windows Server
|
2008 for x64-based Systems Service Pack 2 |
Affected |
| Microsoft |
Windows Server
|
2008 for x64-based Systems Service Pack 2 (Core installation) |
Affected |
CVE References
- portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0803 portal.msrc.microsoft.com · CVE Record https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CV...
- packetstormsecurity.com/files/153034/Microsoft-Windows-Win32k-Privil... packetstormsecurity.com · CVE Record http://packetstormsecurity.com/files/153034/Microsoft-Windows-Win32k-...
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 | 2021-11-03 00:00 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
AV:L/AC:L/Au:N/C:C/I:C/A:C
Exploitation Status
Exploited in the wild
Recorded 2021-11-03 00:00:00 UTC · CISA
Proof of concept available
Recorded 2019-05-17 09:37:05 UTC · GitHub
Potential Proof of Concepts
These PoCs are unverified and could contain malware. Use at your own risk.
github · Created 2019-05-17 11:05:22 UTC · 81 stars
Win32k Elevation of Privilege Poc
github · Created 2019-05-17 09:37:05 UTC · 0 stars
Win32k Elevation of Privilege Poc
Timeline
Key exploitation, disclosure, scanner coverage, and KEV attestation events for this CVE.
-
00:00 UTC over 4 years ago00:00 UTC · over 4 years ago
Added to CISA KEV
Listed in the CISA Known Exploited Vulnerabilities catalog
-
09:37 UTC about 7 years ago09:37 UTC · about 7 years ago
Public PoC available
Public proof-of-concept code published
-
20:15 UTC over 7 years ago20:15 UTC · over 7 years ago
CVE published
Vulnerability disclosed publicly
-
00:00 UTC over 7 years ago00:00 UTC · over 7 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-2019-0803
{
"cve_id": "CVE-2019-0803",
"title": "An elevation of privilege vulnerability exists in Windows when the Win32k com...",
"affected_vendor": "Microsoft",
"affected_product": "Windows, Windows Server",
"affected_versions": [
{ "vendor": "...", "product": "...", "status": "affected", "display_label": "..." }
],
"confidence": "Confirmed",
"cvss_score": 7.8,
"epss_score": 0.4523,
"exploit_status": {
"exploited_in_the_wild": true,
"active_exploitation_observed": false
},
"sensor_telemetry": { "...": "Pro API fields" },
"proof_of_concepts": [ "..." ],
"scanner_integrations": [ "..." ]
}