CVE-2023-21676
Windows Lightweight Directory Access Protocol (LDAP) Remote Code Execution Vulnerability
HIGH
8.8
CVSS Score
Published: January 10, 2023 at 12:00 AM UTC
Updated: June 17, 2026 at 05:33 AM UTC
8 products affected across 1 vendorWindows Server 2019Windows 10 1809Windows Server 2022
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Severity
HIGH8.8
Exploit prediction
EPSS 2%
SSVC
No known exploit
Description
Windows Lightweight Directory Access Protocol (LDAP) Remote Code Execution Vulnerability
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Affected range stops below 10.0.17763.3887, so it looks safe — our inference, not a vendor statement
10.0.0 ≤ v < 10.0.19042.248610.0.0
Affected range stops below 10.0.19042.2486, so it looks safe — our inference, not a vendor statement
10.0.19043.0 ≤ v < 10.0.19044.248610.0.19043.0
Affected range stops below 10.0.19044.2486, so it looks safe — our inference, not a vendor statement
10.0.19045.0 ≤ v < 10.0.19045.248610.0.19045.0
Affected range stops below 10.0.19045.2486, so it looks safe — our inference, not a vendor statement
10.0.0 ≤ v < 10.0.22000.145510.0.0
Affected range stops below 10.0.22000.1455, so it looks safe — our inference, not a vendor statement
10.0.22621.0 ≤ v < 10.0.22621.110510.0.22621.0
Affected range stops below 10.0.22621.1105, so it looks safe — our inference, not a vendor statement
10.0.17763.0 ≤ v < 10.0.17763.388710.0.17763.0
Affected range stops below 10.0.17763.3887, so it looks safe — our inference, not a vendor statement
10.0.20348.0 ≤ v < 10.0.20348.148710.0.20348.0
Affected range stops below 10.0.20348.1487, so it looks safe — our inference, not a vendor statement
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
References (1)
Vendor Advisory
Source: [email protected]
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-21676SSVC — Action Prioritization
SSVCNo known exploitNot automatableTotal impact
SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.
CVSS
8.8HIGHmicrosoft
Vector?
Quick Info
StatusMODIFIED
CWE
NVD-CWE-noinfo
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