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Case File

CVE-2019-1040

MEDIUM · CVSS 5.3 EPSS 48.04% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2019-06-12 · Last synced 2026-08-04

CyberRota Analysis

This is a medium severity vulnerability with a CVSS score of 5.3. It affects Microsoft, Windows, Exchange. Public exploit code or proof-of-concept references have been detected in its references. Its EPSS score suggests a 48.0% probability of exploitation in the next 30 days.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Detected Signals
exploit

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2019-1040
Severity
MEDIUM
CVSS
5.3
EPSS
48.04%
Microsoft Windows Exchange

Original NVD Description

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.

Related CVEs

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