CVE-2016-8625

20

FAUCET Score

CVE-2016-8625 describes a vulnerability in curl versions prior to 7.51.0, where its use of the outdated IDNA 2003 standard for International Domain Names could redirect users to unintended hosts. With a CVSS score of 7.5 (HIGH), this vulnerability is easily exploitable over the network with low complexity and no user interaction, potentially leading to high integrity impacts. Despite its severity, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

Vendor	Product	Version(s)	CPE
		< 7.51.0CPE matchmatch criteria	cpe:2.3:a:haxx:curl::::::::

CVSS Data

CVSS version used by this source: 3.0

5.3MEDIUM

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

LOW

Availability Impact

NONE

Exploitability Score

3.9

Impact Score

1.4

CvssVersion

3.0

Exploit Intelligence

EPSS Score

4.32%

Probability of exploitation in next 30 days

EPSS Percentile

90.2%

Percentile rank of EPSS score among Peer Group

As of 2026-07-26

Model: v2026.06.15

This CVE's current EPSS score of 0.0432 is in the 83rd percentile among its peer group of 51,485 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (28)

jitsipatch availablevia llm_extracted

Fixed in: 7.50.3

redhatpatch availablevia redhat_api

Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.5 EUSFixed in: httpd24-nghttp2-0:1.7.1-7.el7

redhatpatch availablevia redhat_api

Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.4 EUSFixed in: httpd24-curl-0:7.61.1-1.el7

redhatpatch availablevia redhat_api

Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.4 EUSFixed in: httpd24-httpd-0:2.4.34-7.el7

redhatpatch availablevia redhat_api

Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.4 EUSFixed in: httpd24-nghttp2-0:1.7.1-7.el7

redhatpatch availablevia redhat_api

Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.5 EUSFixed in: httpd24-curl-0:7.61.1-1.el7

redhatpatch availablevia redhat_api

Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.5 EUSFixed in: httpd24-httpd-0:2.4.34-7.el7

redhatpatch availablevia nvd_reference

redhatpatch availablevia redhat_api

Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.6 EUSFixed in: httpd24-curl-0:7.61.1-1.el7

redhatpatch availablevia redhat_api

Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.6 EUSFixed in: httpd24-httpd-0:2.4.34-7.el7

redhatpatch availablevia redhat_api

Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.6 EUSFixed in: httpd24-nghttp2-0:1.7.1-7.el7

redhatpatch availablevia redhat_api

Product: Text-Only JBCSFixed in: jbcs-httpd24-curl

redhatpatch availablevia redhat_api

Product: Red Hat Software Collections for Red Hat Enterprise Linux 6Fixed in: httpd24-curl-0:7.61.1-1.el6

redhatpatch availablevia redhat_api

Product: Red Hat Software Collections for Red Hat Enterprise Linux 6Fixed in: httpd24-httpd-0:2.4.34-7.el6

redhatpatch availablevia redhat_api

Product: Red Hat Software Collections for Red Hat Enterprise Linux 6Fixed in: httpd24-nghttp2-0:1.7.1-7.el6

redhatpatch availablevia redhat_api

Product: Red Hat Software Collections for Red Hat Enterprise Linux 7Fixed in: httpd24-curl-0:7.61.1-1.el7

redhatpatch availablevia redhat_api

Product: Red Hat Software Collections for Red Hat Enterprise Linux 7Fixed in: httpd24-httpd-0:2.4.34-7.el7

redhatpatch availablevia redhat_api

Product: Red Hat Software Collections for Red Hat Enterprise Linux 7Fixed in: httpd24-nghttp2-0:1.7.1-7.el7

sierra_wirelesspatch availablevia llm_extracted

Fixed in: 7.50.3

redhatvendor investigatingvia redhat_api

Product: Red Hat JBoss Enterprise Web Server 3Fixed in: curl

redhatno patchvia redhat_api

Product: .NET Core 2.0 on Red Hat Enterprise LinuxFixed in: rh-dotnet20-curl

redhatno patchvia redhat_api

Product: .NET Core 1.0 on Red Hat Enterprise LinuxFixed in: rh-dotnetcore10-curl

redhatno patchvia redhat_api

Product: .NET Core 1.1 on Red Hat Enterprise LinuxFixed in: rh-dotnetcore11-curl

redhatend of lifevia redhat_api

Product: Red Hat Enterprise Linux 7Fixed in: curl

redhatend of lifevia redhat_api

Product: .NET Core 2.1 on Red Hat Enterprise LinuxFixed in: rh-dotnet21-curl

redhatend of lifevia redhat_api

Product: Red Hat Enterprise Linux 5Fixed in: curl

redhatend of lifevia redhat_api

Product: Red Hat Enterprise Linux 6Fixed in: curl

redhatend of lifevia redhat_api

Product: Red Hat Enterprise Virtualization 3Fixed in: mingw-virt-viewer

Vendor Advisories (3)

redhatCVE-2016-8625Moderate

curl: IDNA 2003 makes curl use wrong host

sierra_wirelessllm-sierra_wireless-dd49b8506003dc78HIGH

IDNA 2003 makes curl use wrong host

jitsillm-jitsi-1484142821bb924bHIGH

IDNA 2003 makes curl use wrong host

References

access.redhat.com / errata/RHSA-2018:2486

Third Party Advisory

access.redhat.com / errata/RHSA-2018:3558

Third Party Advisory

bugzilla.redhat.com / show_bug.cgi

Issue TrackingPatchThird Party Advisory

curl.haxx.se / CVE-2016-8625.patch

PatchVendor Advisory

curl.haxx.se / docs/adv_20161102K.html

PatchVendor Advisory

lists.apache.org / thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E

lists.apache.org / thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E

security.gentoo.org / glsa/201701-47

Third Party Advisory

tenable.com / security/tns-2016-21

Third Party Advisory

securityfocus.com / bid/94107

Third Party AdvisoryVDB Entry

securitytracker.com / id/1037192

Third Party AdvisoryVDB Entry