CVE-2020-1118
A denial of service vulnerability exists in the Windows implementation of Transport Layer Security (TLS) when it improperly handles certain
CVSS
8.6
High
EPSS
15.2%
p97
KEV
—
Exploit Today
29
0-100
Published: May 21, 2020 · Last modified: Aug 19, 2026
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.
No related CVEs by CWE or product.