PT-2019-3880 · Microsoft · Windows

Published 2019-11-12 · Updated 2026-03-10 · CVE-2019-1384

Positive Technologies (AI Summary)

CVSS v3.1

9.9

Critical

Base vector

AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Microsoft Windows (affected versions not specified)

Description A security feature bypass vulnerability exists in Microsoft Windows, related to the NETLOGON message, allowing an attacker to obtain the session key and sign messages. This can be exploited by sending a specially crafted authentication request. The vulnerability is associated with insufficient input validation in the Netlogon service, which can be exploited by a remote attacker to bypass existing security restrictions using a specially crafted request.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Insufficiently Protected Credentials

RCE

Weakness Enumeration

CWE-522

CWE-20

Related Identifiers

BDU:2019-04271

CVE-2019-1384

Affected Products

Windows

References · 8

• https://nvd.nist.gov/vuln/detail/CVE-2019-1384 · Security Note
• https://osv.dev/vulnerability/CVE-2019-1384 · Vendor Advisory
• https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2019-1384 · Vendor Advisory
• https://bdu.fstec.ru/vul/2019-04271 · Security Note
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1384 · Vendor Advisory
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-1384 · Security Note
• https://t.me/rnetsec/10886 · Telegram Post
• https://t.me/defcon_news/30117 · Telegram Post