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CVE-2020-1509

Local Security Authority Subsystem Service Elevation of Privilege Vulnerability

HIGH
7.8
CVSS Score
Published: August 17, 2020 at 07:13 PM UTC
Updated: June 17, 2026 at 03:01 AM UTC
19 products affected across 1 vendorWindows Server 2016Windows Server 2019Windows Server 2012

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Severity
HIGH7.8
Exploit prediction
EPSS 3%

Description

An elevation of privilege vulnerability exists in the Local Security Authority Subsystem Service (LSASS) when an authenticated attacker sends a specially crafted authentication request. A remote attacker who successfully exploited this vulnerability could cause an elevation of privilege on the target system's LSASS service. The security update addresses the vulnerability by changing the way that LSASS handles specially crafted authentication requests.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Windows 10· Microsoft
95%
1607170918031809190319092004
Windows 7· Microsoft
95%
sp1
Windows 8-1· Microsoft
95%
6.3.0 ≤ v < publication6.3.0
Affected range stops below publication, so it looks safe — our inference, not a vendor statement
Windows Rt 8-1· Microsoft
95%
All versions
Windows Server 2008· Microsoft
95%
r2 sp1sp2
Windows Server 2012· Microsoft
95%
6.2.0 ≤ v < publication6.3.0 ≤ v < publication6.2.06.3.0r2
Affected range stops below publication, so it looks safe — our inference, not a vendor statement
Windows Server 2016· Microsoft
95%
10.0.0 ≤ v < publication10.0.0190319092004
Affected range stops below publication, so it looks safe — our inference, not a vendor statement
Windows Server 2019· Microsoft
95%
10.0.0 ≤ v < publication10.0.0
Affected range stops below publication, so it looks safe — our inference, not a vendor statement
Windows 10 1507· Microsoft
60%
10.0.0 ≤ v < publication10.0.0
Affected range stops below publication, so it looks safe — our inference, not a vendor statement
Windows 10 1607· Microsoft
60%
10.0.0 ≤ v < publication10.0.0
Affected range stops below publication, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (1)

x_refsource_MISCPatchVendor Advisory
Source: [email protected]
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1509

CVSS

7.8HIGHmicrosoft
Vector?

Quick Info

StatusMODIFIED
CWE
NVD-CWE-noinfo

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