CVE-2016-8619

26

FAUCET Score

CVE-2016-8619 describes a critical memory double-free vulnerability in the read_data() function of curl versions prior to 7.51.0. This flaw, affecting haxx curl, carries a CVSS v3.0 score of 9.8, indicating a severe risk with network-based exploitation, low attack complexity, and potential for complete compromise of confidentiality, integrity, and availability. While no active exploitation or public exploit code (Metasploit, Nuclei, ExploitDB) has been identified, the vulnerability has garnered some community discussion and media coverage, suggesting awareness within the security community.

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

4.99%

Probability of exploitation in next 30 days

EPSS Percentile

91.3%

Percentile rank of EPSS score among Peer Group

As of 2026-07-27

Model: v2026.06.15

This CVE's current EPSS score of 0.0499 is in the 85th percentile among its peer group of 36,835 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (26)

jitsipatch availablevia llm_extracted

Fixed in: 7.50.3

oraclepatch availablevia nvd_reference

redhatpatch availablevia nvd_reference

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 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 7.6 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

sierra_wirelesspatch availablevia llm_extracted

Fixed in: 7.50.3

redhatvendor investigatingvia redhat_api

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

redhatend of lifevia redhat_api

Product: Red Hat Enterprise Linux 7Fixed in: curl

redhatend of lifevia redhat_api

Product: Red Hat Enterprise Linux 5Fixed 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 Virtualization 3Fixed in: mingw-virt-viewer

redhatend of lifevia redhat_api

Product: Red Hat Enterprise Linux 6Fixed in: curl

Vendor Advisories (3)

redhatCVE-2016-8619Moderate

curl: Double-free in krb5 code

sierra_wirelessllm-sierra_wireless-27640417dd2a4eb3HIGH

double free in krb5 code

jitsillm-jitsi-59636d3dc8eb1edeHIGH

double free in krb5 code

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-2016-8619.patch

PatchVendor Advisory

curl.haxx.se / docs/adv_20161102E.html

PatchVendor Advisory

security.gentoo.org / glsa/201701-47

Third Party Advisory

tenable.com / security/tns-2016-21

Third Party Advisory

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

Patch

securityfocus.com / bid/94100

Third Party AdvisoryVDB Entry

securitytracker.com / id/1037192

Third Party AdvisoryVDB Entry