CVE-2021-31186HighCVSS 7.4

Windows Remote Desktop Protocol (RDP) Information Disclosure Vulnerability

Published
May 11, 2021
Last Modified
—

🔗 CVE IDs covered (1)

CVE-2021-31186 →

📋 Description

What type of information could be disclosed by this vulnerability? The type of information that could be disclosed if an attacker successfully exploited this vulnerability is uninitialized memory.

How would an attacker exploit this vulnerability? An attacker would have to convince a targeted user to connect to a malicious RDP server. Upon connecting, the malicious server could gather some contents of memory from the RDP client.

🎯 Affected products40

  • Windows 10 Version 1607 for 32-bit Systems
  • Windows 10 Version 1607 for x64-based Systems
  • Windows 10 Version 1803 for 32-bit Systems
  • Windows 10 Version 1803 for ARM64-based Systems
  • Windows 10 Version 1803 for x64-based Systems
  • Windows 10 Version 1809 for 32-bit Systems
  • Windows 10 Version 1809 for ARM64-based Systems
  • Windows 10 Version 1809 for x64-based Systems
  • Windows 10 Version 1909 for 32-bit Systems
  • Windows 10 Version 1909 for ARM64-based Systems
  • Windows 10 Version 1909 for x64-based Systems
  • Windows 10 Version 2004 for 32-bit Systems
  • Windows 10 Version 2004 for ARM64-based Systems
  • Windows 10 Version 2004 for x64-based Systems
  • Windows 10 Version 20H2 for 32-bit Systems
  • Windows 10 Version 20H2 for ARM64-based Systems
  • Windows 10 for 32-bit Systems
  • Windows 10 for x64-based Systems
  • Windows 7 for 32-bit Systems Service Pack 1
  • Windows 7 for x64-based Systems Service Pack 1
  • Windows 8.1 for 32-bit systems
  • Windows 8.1 for x64-based systems
  • Windows RT 8.1
  • Windows Server 2008 R2 for x64-based Systems Service Pack 1
  • Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)
  • Windows Server 2008 for 32-bit Systems Service Pack 2
  • Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation)
  • Windows Server 2008 for x64-based Systems Service Pack 2
  • Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation)
  • Windows Server 2012
  • +10 more not shown

✅ Remediation

KB5003174 (Security Update) — fixed build 10.0.17134.2207 KB5003171 (Security Update) — fixed build 10.0.17763.1935 KB5003169 (Security Update) — fixed build 10.0.18363.1556 KB5003173 (Security Update) — fixed build 10.0.19041.982 KB5003173 (Security Update) — fixed build 10.0.19042.982 KB5003172 (Security Update) — fixed build 10.0.10240.18931 KB5003197 (Security Update) — fixed build 10.0.14393.4401 KB5003233 (Monthly Rollup) — fixed build 6.1.7601.24597 KB5003228 (Security Only) — fixed build 6.1.7601.24598 KB5003209 (Monthly Rollup) — fixed build 6.3.9600.20017 KB5003220 (Security Only) — fixed build 6.3.9600.20017 KB5003210 (Monthly Rollup) — fixed build 6.0.6003.21117 KB5003225 (Security Only) — fixed build 6.0.6003.21117 KB5003208 (Monthly Rollup) — fixed build 6.2.9200.23347 KB5003203 (Security Only) — fixed build 6.2.9200.23347

🔗 References (27)