Overview
- Description
- The EPATHOBJ::pprFlattenRec function in win32k.sys in the kernel-mode drivers in Microsoft Windows XP SP2 and SP3, Windows Server 2003 SP2, Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8, and Windows Server 2012 does not properly initialize a pointer for the next object in a certain list, which allows local users to obtain write access to the PATHRECORD chain, and consequently gain privileges, by triggering excessive consumption of paged memory and then making many FlattenPath function calls, aka "Win32k Read AV Vulnerability."
- Source
- cve@mitre.org
- NVD status
- Analyzed
Social media
- Hype score
- Not currently trending
Risk scores
CVSS 3.1
- Type
- Primary
- Base score
- 7.8
- Impact score
- 5.9
- Exploitability score
- 1.8
- Vector string
- CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- Severity
- HIGH
CVSS 2.0
- Type
- Primary
- Base score
- 6.9
- Impact score
- 10
- Exploitability score
- 3.4
- Vector string
- AV:L/AC:M/Au:N/C:C/I:C/A:C
Known exploits
Data from CISA
- Vulnerability name
- Microsoft Win32k Privilege Escalation Vulnerability
- Exploit added on
- Mar 28, 2022
- Exploit action due
- Apr 18, 2022
- Required action
- Apply updates per vendor instructions.
Weaknesses
- nvd@nist.gov
- CWE-119
Configurations
[
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:microsoft:windows_7:-:sp1:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "C2B1C231-DE19-4B8F-A4AA-5B3A65276E46"
},
{
"criteria": "cpe:2.3:o:microsoft:windows_8:-:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "0D229E41-A971-4284-9657-16D78414B93F"
},
{
"criteria": "cpe:2.3:o:microsoft:windows_rt:-:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "ABC7A32C-4A4A-4533-B42E-350E728ADFEB"
},
{
"criteria": "cpe:2.3:o:microsoft:windows_server_2003:-:sp2:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "1D929AA2-EE0B-4AA1-805D-69BCCA11B77F"
},
{
"criteria": "cpe:2.3:o:microsoft:windows_server_2008:-:sp2:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "5F422A8C-2C4E-42C8-B420-E0728037E15C"
},
{
"criteria": "cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:x64:*",
"vulnerable": true,
"matchCriteriaId": "AF07A81D-12E5-4B1D-BFF9-C8D08C32FF4F"
},
{
"criteria": "cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "A7DF96F8-BA6A-4780-9CA3-F719B3F81074"
},
{
"criteria": "cpe:2.3:o:microsoft:windows_vista:-:sp2:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "BF1AD1A1-EE20-4BCE-9EE6-84B27139811C"
},
{
"criteria": "cpe:2.3:o:microsoft:windows_xp:-:sp2:*:*:professional:*:x64:*",
"vulnerable": true,
"matchCriteriaId": "C6109348-BC79-4ED3-8D41-EA546A540C79"
},
{
"criteria": "cpe:2.3:o:microsoft:windows_xp:-:sp3:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "C9392D35-7BF5-48E9-879B-BBDE9A9E9AB9"
}
],
"operator": "OR"
}
]
}
]