CVE-2019-1040
MEDIUM EXPLOITED IN THE WILDMicrosoft Windows - Privilege Escalation
Title source: llmDescription
A tampering vulnerability exists in Microsoft Windows when a man-in-the-middle attacker is able to successfully bypass the NTLM MIC (Message Integrity Check) protection. An attacker who successfully exploited this vulnerability could gain the ability to downgrade NTLM security features. To exploit this vulnerability, the attacker would need to tamper with the NTLM exchange. The attacker could then modify flags of the NTLM packet without invalidating the signature. The update addresses the vulnerability by hardening NTLM MIC protection on the server-side.
Exploits (7)
nomisec
WORKING POC
20 stars
by lazaars · client-side
https://github.com/lazaars/UltraRealy_with_CVE-2019-1040
Scores
CVSS v3
5.3
EPSS
0.8968
EPSS Percentile
99.6%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N
Details
VulnCheck KEV
2020-10-20
InTheWild.io
2020-12-23
Status
published
Products (18)
microsoft/windows_10
microsoft/windows_10
1607
microsoft/windows_10
1703
microsoft/windows_10
1709
microsoft/windows_10
1803
microsoft/windows_10
1809
microsoft/windows_10
1903
microsoft/windows_7
microsoft/windows_8.1
microsoft/windows_rt_8.1
... and 8 more
Published
Jun 12, 2019
Tracked Since
Feb 18, 2026