CVE-2020-11996

high-risk
Published 2020-06-26

A specially crafted sequence of HTTP/2 requests sent to Apache Tomcat 10.0.0-M1 to 10.0.0-M5, 9.0.0.M1 to 9.0.35 and 8.5.0 to 8.5.55 could trigger high CPU usage for several seconds. If a sufficient number of such requests were made on concurrent HTTP/2 connections, the server could become unresponsive.

Do I need to act?

!
45.1% chance of exploitation in next 30 days
EPSS score — higher than 55% of all CVEs
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
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Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
7
CVSS 7.5/10 High
NETWORK / LOW complexity

References (48)

and 28 more references
68
/ 100
high-risk
Severity 26/34 · High
Exploitability 17/34 · Moderate
Exposure 25/34 · High