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CVE-2016-9952 Details

Description

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."

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:8.1 HIGHVector:CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

CNA: CISA-ADPCVSS-B:8.1 HIGHVector:CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://curl.haxx.se/CVE-2016-9952.patch	CVE	Vendor Advisory
https://curl.haxx.se/docs/adv_20161221B.html	CVE	Vendor Advisory
https://curl.haxx.se/CVE-2016-9952.patch	[email protected]	Vendor Advisory
https://curl.haxx.se/docs/adv_20161221B.html	[email protected]	Vendor Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-295	Improper Certificate Validation	[email protected]
CWE-295	Improper Certificate Validation	CISA-ADP

Affected Products

Product	Versions
haxx curl	>= 7.30.0, <= 7.51.0
CPE cpe:2.3:a:haxx:curl:::::::: Remediation No remediation found in references.
microsoft windows embedded compact	All versions
CPE cpe:2.3:o:microsoft:windows_embedded_compact:-:::::::* Remediation No remediation found in references.

Change History

7 change records found show changes

Date	Action	Recorded By
Jun 17, 2026	CVE Modified	CISA-ADP
Jun 17, 2026	CVE Modified	[email protected]
Nov 21, 2024	CVE Modified	CVE
Aug 1, 2024	CVE Modified	CISA-ADP
May 14, 2024	CVE Modified	[email protected]
Dec 15, 2023	CPE Deprecation Remap	[email protected]
Apr 10, 2018	Initial Analysis	[email protected]