What it is
CVE-2010-4398 is a vulnerability affecting Microsoft Windows. Stack-based buffer overflow in the RtlQueryRegistryValues function in win32k.sys in Microsoft Windows XP SP2 and SP3, Windows Server 2003 SP2, Windows...
Vulnerability report
Exploited in the wild
Confirmed confidence
In CISA KEV
CVE-2010-4398
Windows
Microsoft / Windows
- Severity
- CVSS 7.8 · High
- Confidence
- Confirmed
- Exploit status
- Exploited in the wild
- EPSS
- 8.7%
- First observed
- —
- Last observed
- —
Decision summary
What security teams need to know first
Direct answers before the deeper technical record.
Is it exploited?
Yes. KEV Intelligence tracks this CVE as a known exploited vulnerability. Confidence is confirmed.
Who is affected?
Microsoft / Windows.
What should we do?
Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.
Overview
Windows
Stack-based buffer overflow in the RtlQueryRegistryValues function in win32k.sys in Microsoft Windows XP SP2 and SP3, Windows Server 2003 SP2, Windows Vista SP1 and SP2, Windows Server 2008 Gold, SP2, and R2, and Windows 7 allows local users to gain privileges, and bypass the User Account Control (UAC) feature, via a crafted REG_BINARY value for a SystemDefaultEUDCFont registry key, aka "Driver Improper Interaction with Windows Kernel Vulnerability."
- Published
- 03 Dec 2010
- Exploitation Reported
- 28 Mar 2022
- Attack vector
- Local
- Complexity
- Low
- Privileges
- Low
- User interaction
- None
Tags
windows
cisa
CVE References
- CVE Record CVE.org · CVE Record https://www.cve.org/CVERecord?id=CVE-2010-4398
- MS11-011 docs.microsoft.com · Vendor Advisory https://docs.microsoft.com/en-us/security-updates/securitybulletins/2...
- VU#529673 kb.cert.org · Third-Party Advisory http://www.kb.cert.org/vuls/id/529673
- 42356 secunia.com · Third-Party Advisory http://secunia.com/advisories/42356
- 15609 exploit-db.com · Exploit http://www.exploit-db.com/exploits/15609/
- 45045 securityfocus.com · VDB Entry http://www.securityfocus.com/bid/45045
- ADV-2011-0324 vupen.com · VDB Entry http://www.vupen.com/english/advisories/2011/0324
- 1025046 securitytracker.com · VDB Entry http://www.securitytracker.com/id?1025046
- oval:org.mitre.oval:def:12162 oval.cisecurity.org · VDB Entry https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.m...
- isc.sans.edu/diary.html isc.sans.edu · CVE Record http://isc.sans.edu/diary.html?storyid=9988
- nakedsecurity.sophos.com/2010/11/25/new-windows-zero-day-flaw-bypasse... nakedsecurity.sophos.com · CVE Record http://nakedsecurity.sophos.com/2010/11/25/new-windows-zero-day-flaw-...
- support.avaya.com/css/P8/documents/100127248 support.avaya.com · CVE Record http://support.avaya.com/css/P8/documents/100127248
- exploit-db.com/bypassing-uac-with-user-privilege-under-wind... exploit-db.com · CVE Record http://www.exploit-db.com/bypassing-uac-with-user-privilege-under-win...
- twitter.com/msftsecresponse/statuses/7590788200402945 twitter.com · CVE Record http://twitter.com/msftsecresponse/statuses/7590788200402945
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
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.
Learn about Pro API access| Source | Added |
|---|---|
| CISA First | 2022-03-28 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.
Scanner coverage
No scanner integrations recorded yet.
Virtual patch status
No KEV Intelligence virtual patch is currently available. Future rules ship for ModSecurity, Cloudflare, and AWS WAF.
Learn about virtual patches →No detection artifacts or sensor request patterns are available for this CVE yet.
Check back as sensor telemetry and scanner integrations are updated.
Risk and context
Severity, weaknesses, and research context
CVSS v3.1
7.8
High
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS
8.7%
Weaknesses
All CVSS Scores
CVSS v3.1
7.8
High
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS v2.0
7.2
High
AV:L/AC:L/Au:N/C:C/I:C/A:C
Timeline
From disclosure to observed exploitation
-
Added to CISA KEV
Listed in the CISA Known Exploited Vulnerabilities catalog
-
CVE published
Vulnerability disclosed publicly
-
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.
- 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-2010-4398
Free JSON includes basic KEV fields{
"cve_id": "CVE-2010-4398",
"confidence": "Confirmed",
"cvss_score": 7.8,
"cvss_estimated": false,
"epss_score": 0.08661,
"exploit_status": {
"exploited_in_the_wild": true,
"active_exploitation_observed": false
},
"sensor_telemetry": { "attempts": 0, "sensors": 0 }
}Early warning alerts
Get alerts on high-impact exploitation
Receive curator-selected alerts when exploitation activity warrants attention. Each alert includes the evidence and context needed to decide what requires attention now.