CVE-2016-9952: Haxx Curl

High severity, CVSS 8.1. EPSS: 1.3% chance of exploitation in the next 30 days.

The verify_certificate function in lib/vtls/schannel.c in libcurl 7.30.0 through 7.51.0, when built for Windows CE using the schannel TLS backend, makes it easier for remote attackers to conduct man-in-the-middle attacks via a crafted wildcard SAN in a server certificate, as demonstrated by "*.com."

Affected products

• Haxx Curl: from 7.30.0, up to and including 7.51.0

Published 2018-03-12. Last modified 2026-06-17.