CVE-2019-5436

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.

CVSS 3.1

7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS

50% chance of exploitation in the next 30 days; higher than 98% of CVEs (scores of 2026-10-25)

CWEs

CWE-787, CWE-122

Published

2019-05-28

Modified

2026-10-14

Record from

the NVD, synced 2026-10-19

Affected

• debian:debian_linux
• f5:traffix_signaling_delivery_controller
• fedoraproject:fedora
• haxx:libcurl
• netapp:hci_management_node
• netapp:solidfire
• netapp:steelstore_cloud_integrated_storage
• opensuse:leap
• oracle:enterprise_manager_ops_center
• oracle:mysql_server
• oracle:oss_support_tools

References

• http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00008.html
• http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00017.html
• http://www.openwall.com/lists/oss-security/2019/09/11/6
• https://curl.haxx.se/docs/CVE-2019-5436.html
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SMG3V4VTX2SE3EW3HQTN3DDLQBTORQC2/

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