CVE-2016-9586: Haxx Curl

High severity, CVSS 8.1. EPSS: 4.7% chance of exploitation in the next 30 days.

curl before version 7.52.0 is vulnerable to a buffer overflow when doing a large floating point output in libcurl's implementation of the printf() functions. If there are any application that accepts a format string from the outside without necessary input filtering, it could allow remote attacks.

Affected products

• Haxx Curl: before 7.52.0 (fixed in 7.52.0)

Published 2018-04-23. Last modified 2026-06-17.