CVE-2023-21746
published 2023-01-10CVE-2023-21746: Windows NTLM Elevation of Privilege Vulnerability Windows NTLM Elevation of Privilege Vulnerability
high7.8CVSS 3.1
AVLACLPRLUINSUCHIHAH
ITWEXPLOITVulnCheck KEV
Exploited in the wild
EPSS
2.54%
83.2th percentile
Windows NTLM Elevation of Privilege Vulnerability
Windows NTLM Elevation of Privilege Vulnerability
Affected
34 ranges· showing 25
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| microsoft | windows_10_version_1507 | >= 10.0.10240.0 < 10.0.10240.19685 | 10.0.10240.19685 |
| microsoft | windows_10_version_1607 | >= 10.0.14393.0 < 10.0.14393.5648 | 10.0.14393.5648 |
| microsoft | windows_10_version_1809 | >= 10.0.0 < 10.0.17763.3887 | 10.0.17763.3887 |
| microsoft | windows_10_version_1809 | >= 10.0.17763.0 < 10.0.17763.3887 | 10.0.17763.3887 |
| microsoft | windows_10_version_20h2 | >= 10.0.0 < 10.0.19042.2486 | 10.0.19042.2486 |
| microsoft | windows_10_version_21h2 | >= 10.0.19043.0 < 10.0.19044.2486 | 10.0.19044.2486 |
| microsoft | windows_10_version_22h2 | >= 10.0.19045.0 < 10.0.19045.2486 | 10.0.19045.2486 |
| microsoft | windows_11_version_21h2 | >= 10.0.0 < 10.0.22000.1455 | 10.0.22000.1455 |
| microsoft | windows_11_version_22h2 | >= 10.0.22621.0 < 10.0.22621.1105 | 10.0.22621.1105 |
| microsoft | windows_7 | >= 6.1.0 < 6.1.7601.26321 | 6.1.7601.26321 |
| microsoft | windows_7_service_pack_1 | >= 6.1.0 < 6.1.7601.26321 | 6.1.7601.26321 |
| microsoft | windows_8.1 | >= 6.3.0 < 6.3.9600.20778 | 6.3.9600.20778 |
| microsoft | windows_server_2008_r2_service_pack_1 | >= 6.1.7601.0 < 6.1.7601.26321 | 6.1.7601.26321 |
| microsoft | windows_server_2012 | >= 6.2.9200.0 < 6.2.9200.24075 | 6.2.9200.24075 |
| microsoft | windows_server_2012_r2 | >= 6.3.9600.0 < 6.3.9600.20778 | 6.3.9600.20778 |
| microsoft | windows_server_2016 | >= 10.0.14393.0 < 10.0.14393.5648 | 10.0.14393.5648 |
| microsoft | windows_server_2019 | >= 10.0.17763.0 < 10.0.17763.3887 | 10.0.17763.3887 |
| microsoft | windows_server_2022 | >= 10.0.20348.0 < 10.0.20348.1487 | 10.0.20348.1487 |
| msrc | windows_10 | — | — |
| msrc | windows_10_version_1607 | — | — |
| msrc | windows_10_version_1809 | — | — |
| msrc | windows_10_version_20h2 | — | — |
| msrc | windows_10_version_21h2 | — | — |
| msrc | windows_10_version_22h2 | — | — |
| msrc | windows_11_version_21h2 | — | — |
Detection & IOCsextracted from sources · hover to see the quote
- →Successful exploitation of this vulnerability grants SYSTEM-level privileges via Windows NTLM, making privilege escalation to SYSTEM a key behavioral indicator to monitor. ↗
- ·Microsoft has not observed active exploitation in the wild at time of disclosure; exploitation is rated 'Less Likely' for both latest and older software releases. ↗
- ·Customer action is required — patching is necessary to remediate this Windows NTLM Elevation of Privilege vulnerability. ↗
CVSS provenance
nvdv3.17.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
cvelistv57.8HIGH
vulncheck7.8HIGH
vendor_msrc7.8HIGH
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GHSA
GHSA-vxg3-frf4-qwph: Windows NTLM Elevation of Privilege Vulnerability
ghsa_unreviewed·2023-01-11
CVE-2023-21746 [HIGH] GHSA-vxg3-frf4-qwph: Windows NTLM Elevation of Privilege Vulnerability
Windows NTLM Elevation of Privilege Vulnerability.
CVEList
Windows NTLM Elevation of Privilege Vulnerability
cvelistv5·2023-01-10·CVSS 7.8
CVE-2023-21746 [HIGH] Windows NTLM Elevation of Privilege Vulnerability
Windows NTLM Elevation of Privilege Vulnerability
Windows NTLM Elevation of Privilege Vulnerability
VulnCheck
Windows NTLM Elevation of Privilege Vulnerability
vulncheck·2023·CVSS 7.8
CVE-2023-21746 [HIGH] Windows NTLM Elevation of Privilege Vulnerability
Windows NTLM Elevation of Privilege Vulnerability
Windows NTLM Elevation of Privilege Vulnerability
Affected: Microsoft Windows
Required Action: Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.
Exploitation References: https://www.cert.ssi.gouv.fr/uploads/CERTFR-2023-CTI-007.pdf; https://bi.zone/upload/for_download/Threat_Zone_2025_BI.ZONE_Research_rus.pdf
Exploit PoC: https://vulncheck.com/xdb/08eae8850638; https://vulncheck.com/xdb/489fdf7e9b86
Microsoft
Windows NTLM Elevation of Privilege Vulnerability
vendor_msrc·2023-01-10·CVSS 7.8
CVE-2023-21746 [HIGH] Windows NTLM Elevation of Privilege Vulnerability
Windows NTLM Elevation of Privilege Vulnerability
FAQ: What privileges could be gained by an attacker who successfully exploited this vulnerability?
An attacker who successfully exploited this vulnerability could gain SYSTEM privileges.
Windows NTLM: Windows NTLM
Microsoft: Microsoft
Customer Action Required: Yes
Impact: Elevation of Privilege
Exploit Status: Publicly Disclosed:No;Exploited:No;Latest Software Release:Exploitation Less Likely;Older Software Release:Exploitation Less Likely;DOS:N/A
Reference: https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB5022286
Reference: https://support.microsoft.com/help/5022286
Reference: https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB5022291
Reference: https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB50
No detection rules found.
No public exploits indexed.
2023-01-10
Published
Exploited in the wild