{"id":"CVE-2019-5436","title":"A heap buffer overflow in the TFTP receiving code allows for DoS or arbitrary code execution in libcurl versions 7.19.4 through 7.64.1.","summary":"A heap buffer overflow in the TFTP receiving code allows for DoS or arbitrary code execution in libcurl versions 7.19.4 through 7.64.1.","severity":"high","cvss":7.8,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","cwe":["CWE-122","CWE-787"],"vendor":"haxx","product":"libcurl","affected":["libcurl >= 7.19.4, <= 7.64.1","leap = 15.0","leap = 15.1","leap = 42.3","fedora = 29","debian_linux = 9.0","debian_linux = 10.0","traffix_signaling_delivery_controller >= 5.0.0, <= 5.1.0","hci_management_node","solidfire","steelstore_cloud_integrated_storage","enterprise_manager_ops_center = 12.3.3","enterprise_manager_ops_center = 12.4.0","mysql_server <= 5.7.27","mysql_server >= 5.7.28, <= 8.0.17","oss_support_tools = 20.0"],"published":"2019-05-28","updated":"2026-10-14","sourceUpdated":"2026-10-14T07:16:54.610","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2019-5436","references":[{"url":"http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00008.html","label":"support@hackerone.com"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00017.html","label":"support@hackerone.com"},{"url":"http://www.openwall.com/lists/oss-security/2019/09/11/6","label":"support@hackerone.com"},{"url":"https://curl.haxx.se/docs/CVE-2019-5436.html","label":"support@hackerone.com"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SMG3V4VTX2SE3EW3HQTN3DDLQBTORQC2/","label":"support@hackerone.com"},{"url":"https://seclists.org/bugtraq/2020/Feb/36","label":"support@hackerone.com"},{"url":"https://security.gentoo.org/glsa/202003-29","label":"support@hackerone.com"},{"url":"https://security.netapp.com/advisory/ntap-20190606-0004/","label":"support@hackerone.com"},{"url":"https://support.f5.com/csp/article/K55133295","label":"support@hackerone.com"},{"url":"https://support.f5.com/csp/article/K55133295?utm_source=f5support&amp%3Butm_medium=RSS","label":"support@hackerone.com"},{"url":"https://www.debian.org/security/2020/dsa-4633","label":"support@hackerone.com"},{"url":"https://www.oracle.com/security-alerts/cpuapr2020.html","label":"support@hackerone.com"},{"url":"https://www.oracle.com/security-alerts/cpuoct2020.html","label":"support@hackerone.com"},{"url":"https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html","label":"support@hackerone.com"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00008.html","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00017.html","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.openwall.com/lists/oss-security/2019/09/11/6","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://curl.haxx.se/docs/CVE-2019-5436.html","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SMG3V4VTX2SE3EW3HQTN3DDLQBTORQC2/","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://seclists.org/bugtraq/2020/Feb/36","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://security.gentoo.org/glsa/202003-29","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://security.netapp.com/advisory/ntap-20190606-0004/","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://support.f5.com/csp/article/K55133295","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://support.f5.com/csp/article/K55133295?utm_source=f5support&amp%3Butm_medium=RSS","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.debian.org/security/2020/dsa-4633","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.oracle.com/security-alerts/cpuapr2020.html","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.oracle.com/security-alerts/cpuoct2020.html","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-398330.html","label":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"}],"tags":["nvd"],"epss":0.49739,"epssPercentile":0.98874,"ingestedAt":"2026-10-14T07:21:04.813Z","slug":"CVE-2019-5436","body":"## Overview\n\nA heap buffer overflow in the TFTP receiving code allows for DoS or arbitrary code execution in libcurl versions 7.19.4 through 7.64.1.\n\n## Affected\n\n- `libcurl >= 7.19.4, <= 7.64.1`\n- `leap = 15.0`\n- `leap = 15.1`\n- `leap = 42.3`\n- `fedora = 29`\n- `debian_linux = 9.0`\n- `debian_linux = 10.0`\n- `traffix_signaling_delivery_controller >= 5.0.0, <= 5.1.0`\n- `hci_management_node`\n- `solidfire`\n- `steelstore_cloud_integrated_storage`\n- `enterprise_manager_ops_center = 12.3.3`\n- `enterprise_manager_ops_center = 12.4.0`\n- `mysql_server <= 5.7.27`\n- `mysql_server >= 5.7.28, <= 8.0.17`\n- `oss_support_tools = 20.0`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":53,"depthScoreParts":{"impact":42.9,"likelihood":9.9,"exploitation":0,"ransomware":0},"changes":[]}