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CVE-2016-8621

21
FAUCET Score

CVE-2016-8621 describes an out-of-bounds read vulnerability in the `curl_getdate` function of curl before version 7.51.0, affecting haxx curl products. This high-severity vulnerability (CVSS 7.5) can be exploited remotely with low complexity and no user interaction, potentially leading to a complete compromise of confidentiality. Despite its severity, there is no evidence of active exploitation, no public exploit code available, and minimal community discussion or media coverage, suggesting a low current threat landscape.

Impacted Technologies

VendorProductVersion(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:L/I:N/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
1.4
CvssVersion
3.0

Exploit Intelligence

EPSS Score
4.93%
Probability of exploitation in next 30 days
EPSS Percentile
91.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0493 is in the 85th percentile among its peer group of 51,551 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 (25)

jitsipatch availablevia llm_extracted
Fixed in: 7.50.3
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 6Fixed in: httpd24-curl-0:7.61.1-1.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 6Fixed in: httpd24-httpd-0:2.4.34-7.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 6Fixed in: httpd24-nghttp2-0:1.7.1-7.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7Fixed in: httpd24-curl-0:7.61.1-1.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7Fixed in: httpd24-httpd-0:2.4.34-7.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7Fixed in: httpd24-nghttp2-0:1.7.1-7.el7
View patch
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
View patch
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
View patch
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
View patch
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
View patch
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
View patch
redhatpatch availablevia nvd_reference
View patch
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
View patch
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
View patch
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
View patch
redhatpatch availablevia redhat_api
Product: Text-Only JBCSFixed in: jbcs-httpd24-curl
View patch
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
View patch
sierra_wirelesspatch availablevia llm_extracted
Fixed in: 7.50.3
View patch
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-2016-8621Low

curl: curl_getdate out-of-bounds read

Nov 2, 2016
sierra_wirelessllm-sierra_wireless-b96fa5fe387cfb8fMEDIUM

curl_getdate read out of bounds

Nov 2, 2016
jitsillm-jitsi-362db720d348fc79MEDIUM

curl_getdate read out of bounds

Nov 2, 2016

References

access.redhat.com / errata/RHSA-2018:2486
Third Party Advisory
access.redhat.com / errata/RHSA-2018:3558
bugzilla.redhat.com / show_bug.cgi
Issue TrackingPatchThird Party Advisory
curl.haxx.se / CVE-2016-8621.patch
PatchVendor Advisory
curl.haxx.se / docs/adv_20161102G.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
securityfocus.com / bid/94101
Third Party AdvisoryVDB Entry
securitytracker.com / id/1037192
Third Party AdvisoryVDB Entry