CVE-2020-1118
Microsoft Windows Transport Layer Security Denial of Service Vulnerability
- State
- Published
- Severity
- 8.6 High
- Published
- May 21, 2020
- Updated
- Aug 19, 2026
- Reserved
- Nov 4, 2019
Description
A denial of service vulnerability exists in the Windows implementation of Transport Layer Security (TLS) when it improperly handles certain key exchanges. An attacker who successfully exploited the vulnerability could cause a target system to stop responding. To exploit this vulnerability, a remote unauthenticated attacker could send a specially crafted request to a target system utilizing TLS 1.2 or lower, triggering the system to automatically reboot. The update addresses the vulnerability by changing the way TLS key exchange messages are validated.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 8.6 High | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H/E:P/RL:O/RC:C | microsoft |
Weaknesses
The record names no weakness.
Affected Products
| Product | Versions |
|---|---|
Windows 10 Version 1709Microsoft |
|
Windows 10 Version 1709 for 32-bit SystemsMicrosoft |
|
Windows 10 Version 1803Microsoft |
|
Windows 10 Version 1809Microsoft |
|
Windows 10 Version 1809Microsoft |
|
Windows 10 Version 1903 for 32-bit SystemsMicrosoft |
|
Windows 10 Version 1903 for ARM64-based SystemsMicrosoft |
|
Windows 10 Version 1903 for x64-based SystemsMicrosoft |
|
Windows 10 Version 1909Microsoft |
|
Windows Server 2019Microsoft |
|
Windows Server 2019 (Server Core installation)Microsoft |
|
Windows Server, version 1803 (Server Core Installation)Microsoft |
|
Windows Server, version 1903 (Server Core installation)Microsoft |
|
Windows Server, version 1909 (Server Core installation)Microsoft |
|
References
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