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CVE-2019-1172

Windows Information Disclosure Vulnerability

MEDIUM
4.3
CVSS Score
Published: August 14, 2019 at 08:55 PM UTC
Updated: June 17, 2026 at 02:27 AM UTC
15 products affected across 1 vendorWindows Server 2016Windows Server 2012Windows 10

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Severity
MEDIUM4.3
Exploit prediction
EPSS 4%
SSVC
No known exploit

Description

An information disclosure vulnerability exists in Azure Active Directory (AAD) Microsoft Account (MSA) during the login request session. An attacker who successfully exploited the vulnerability could take over a user's account. To exploit the vulnerability, an attacker would have to trick a user into browsing to a specially crafted website, allowing the attacker to steal the user's token. The security update addresses the vulnerability by correcting how MSA handles cookies.

Affected

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

Windows 10· Microsoft
95%
160717031709180318091903
Windows Rt 8-1· Microsoft
95%
All versions
Windows Server 2012· Microsoft
95%
6.3.0 ≤ v < publication6.3.0r2
Affected range stops below publication, so it looks safe — our inference, not a vendor statement
Windows Server 2016· Microsoft
95%
10.0.0 ≤ v < publication10.0.018031903
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
Windows 10 1703· 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 1709· 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 1803· 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 1809· 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-2019-1172

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

4.3MEDIUMmicrosoft
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-200

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