A security feature bypass vulnerability exists where a NETLOGON message is able to obtain the session key and sign messages. To exploit this vulnerability, an attacker could send a specially crafted authentication request. An attacker who successfully exploited this vulnerability could access another machine using the original user privileges. The issue has been addressed by changing how NTLM validates network authentication messages.
Published 2019-06-12 14:29:03
Updated 2025-05-20 18:15:37
View at NVD,   CVE.org

Products affected by CVE-2019-1019

Exploit prediction scoring system (EPSS) score for CVE-2019-1019

4.67%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 89 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2019-1019

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
6.0
MEDIUM AV:N/AC:M/Au:S/C:P/I:P/A:P
6.8
6.4
NIST
8.5
HIGH CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
1.8
6.0
NIST
8.5
HIGH CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
1.8
6.0
Microsoft Corporation 2025-05-20

CWE ids for CVE-2019-1019

References for CVE-2019-1019

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