CVE-2016-5419

32

FAUCET Score

CVE-2016-5419 affects curl and libcurl versions prior to 7.50.1, allowing remote attackers to bypass security restrictions by resuming a TLS session even when the client certificate has changed. This vulnerability carries a CVSSv3 score of 7.5 (HIGH), indicating a network-based attack with low complexity that could lead to high confidentiality impact. Despite its severity, there is no evidence of active exploitation, no public exploit code available, and minimal community discussion or media coverage surrounding this CVE.

Impacted Technologies

Vendor	Product	Version(s)	CPE
		<= 7.50.0CPE matchmatch criteria	cpe:2.3:a:haxx:libcurl::::::::
		8.0CPE matchmatch criteria	cpe:2.3:o:debian:debian_linux:8.0:::::::*
		42.1CPE matchmatch criteria	cpe:2.3:o:opensuse:leap:42.1:::::::*

CVSS Data

CVSS version used by this source: 3.0

7.5HIGH

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

Exploitability Score

3.9

Impact Score

3.6

CvssVersion

3.0

Exploit Intelligence

EPSS Score

15.06%

Probability of exploitation in next 30 days

EPSS Percentile

96.4%

Percentile rank of EPSS score among Peer Group

As of 2026-07-27

Model: v2026.06.15

This CVE's current EPSS score of 0.1506 is in the 95th percentile among its peer group of 51,551 CVEs.

Social Chatter

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 (24)

jitsipatch availablevia llm_extracted

Fixed in: 7.50.0

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

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 redhat_api

Product: Red Hat Enterprise Linux 7Fixed in: curl-0:7.29.0-35.el7

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 JBCS

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

sierra_wirelesspatch availablevia llm_extracted

Fixed in: 7.50.0

redhatno patchvia redhat_api

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

redhatend of lifevia redhat_api

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

Vendor Advisories (3)

redhatCVE-2016-5419Moderate

curl: TLS session resumption client cert bypass

sierra_wirelessllm-sierra_wireless-34cc6a3eca46ad71HIGH

TLS session resumption client cert bypass

jitsillm-jitsi-69eb52ed9632f755HIGH

TLS session resumption client cert bypass

References

lists.opensuse.org / opensuse-updates/2016-09/msg00011.html

lists.opensuse.org / opensuse-updates/2016-09/msg00094.html

Third Party Advisory

rhn.redhat.com / errata/RHSA-2016-2575.html

rhn.redhat.com / errata/RHSA-2016-2957.html

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

curl.haxx.se / docs/adv_20160803A.html

MitigationPatchVendor Advisory

lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/GLPXQQKURBQFM4XM6645VRPTOE2AWG33

lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/K3GQH4V3XAQ5Z53AMQRDEC3C3UHTW7QR

security.gentoo.org / glsa/201701-47

source.android.com / security/bulletin/2016-12-01.html

tenable.com / security/tns-2016-18

debian.org / security/2016/dsa-3638

Third Party Advisory

oracle.com / technetwork/security-advisory/cpuoct2018-4428296.html

securityfocus.com / bid/92292

securityfocus.com / bid/92319

securitytracker.com / id/1036538

securitytracker.com / id/1038341

slackware.com / security/viewer.php

ubuntu.com / usn/USN-3048-1