{"id":"CVE-2019-10072","title":"The fix for CVE-2019-0199 was incomplete and did not address HTTP/2 connection window exhaustion on write in Apache Tomcat versions 9.0.0.M1 to 9.0.19 and 8.5.0 to 8.5.40 ","summary":"The fix for CVE-2019-0199 was incomplete and did not address HTTP/2 connection window exhaustion on write in Apache Tomcat versions 9.0.0.M1 to 9.0.19 and 8.5.0 to 8.5.40 . By not sending WINDOW_UPDATE messages for the connection window …","severity":"none","product":"Apache Tomcat","affected":["apache_tomcat Apache Tomcat 9.0.0.M1 to 9.0.19, 8.5.0 to 8.5.40"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-11-02T17:30:53.444624Z"},"published":"2019-06-21","updated":"2026-11-02","sourceUpdated":"2026-11-02T17:31:07.478Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2019-10072","references":[{"url":"http://www.securityfocus.com/bid/108874","label":"108874"},{"url":"https://usn.ubuntu.com/4128-1/","label":"USN-4128-1"},{"url":"https://usn.ubuntu.com/4128-2/","label":"USN-4128-2"},{"url":"https://access.redhat.com/errata/RHSA-2019:3929","label":"RHSA-2019:3929"},{"url":"https://access.redhat.com/errata/RHSA-2019:3931","label":"RHSA-2019:3931"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00013.html","label":"openSUSE-SU-2020:0038"},{"url":"https://lists.apache.org/thread.html/r6ccee4e849bc77df0840c7f853f6bd09d426f6741247da2b7429d5d9%40%3Cdev.tomcat.apache.org%3E","label":"[tomcat-dev] 20200203 svn commit: r1873527 [24/30] - /tomcat/site/trunk/docs/"},{"url":"https://lists.apache.org/thread.html/r3bbb800a816d0a51eccc5a228c58736960a9fffafa581a225834d97d%40%3Cdev.tomcat.apache.org%3E","label":"[tomcat-dev] 20200203 svn commit: r1873527 [25/30] - /tomcat/site/trunk/docs/"},{"url":"https://lists.apache.org/thread.html/raba0fabaf4d56d4325ab2aca8814f0b30a237ab83d8106b115ee279a%40%3Cdev.tomcat.apache.org%3E","label":"[tomcat-dev] 20200213 svn commit: r1873980 [28/34] - /tomcat/site/trunk/docs/"},{"url":"https://lists.apache.org/thread.html/r48c1444845fe15a823e1374674bfc297d5008a5453788099ea14caf0%40%3Cdev.tomcat.apache.org%3E","label":"[tomcat-dev] 20200213 svn commit: r1873980 [29/34] - /tomcat/site/trunk/docs/"},{"url":"https://www.debian.org/security/2020/dsa-4680","label":"DSA-4680"},{"url":"https://www.oracle.com/security-alerts/cpuapr2020.html"},{"url":"https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html"},{"url":"https://www.oracle.com/security-alerts/cpujan2020.html"},{"url":"https://www.oracle.com/security-alerts/cpuoct2020.html"},{"url":"https://lists.apache.org/thread.html/df1a2c1b87c8a6c500ecdbbaf134c7f1491c8d79d98b48c6b9f0fa6a%40%3Cannounce.tomcat.apache.org%3E"},{"url":"https://www.synology.com/security/advisory/Synology_SA_19_29"},{"url":"https://security.netapp.com/advisory/ntap-20190625-0002/"},{"url":"https://support.f5.com/csp/article/K17321505"},{"url":"https://www.oracle.com/security-alerts/cpuApr2021.html"}],"tags":["cve.org"],"epss":0.72988,"epssPercentile":0.99456,"ingestedAt":"2026-11-05T19:30:42.730Z","slug":"CVE-2019-10072","body":"## Overview\n\nThe fix for CVE-2019-0199 was incomplete and did not address HTTP/2 connection window exhaustion on write in Apache Tomcat versions 9.0.0.M1 to 9.0.19 and 8.5.0 to 8.5.40 . By not sending WINDOW_UPDATE messages for the connection window (stream 0) clients were able to cause server-side threads to block eventually leading to thread exhaustion and a DoS.\n\n## Affected\n\n- `apache_tomcat Apache Tomcat 9.0.0.M1 to 9.0.19, 8.5.0 to 8.5.40`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":17,"depthScoreParts":{"impact":2.8,"likelihood":14.6,"exploitation":0,"ransomware":0},"changes":[]}