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CVE-2016-7056

16
FAUCET Score

CVE-2016-7056 describes a timing attack vulnerability in OpenSSL versions 1.0.1u and earlier, impacting products from Canonical, Debian, and Red Hat. This flaw allows a local attacker to potentially recover ECDSA P-256 private keys. With a CVSS score of 5.5 (Medium), the attack requires local access and low complexity, leading to a high confidentiality impact. Despite its potential, there is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
<= 1.0.1uCPE matchmatch criteria
cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:*
8.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
9.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
6.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*
7.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

5.5MEDIUM

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
1.8
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.59%
Probability of exploitation in next 30 days
EPSS Percentile
44.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0059 is in the 94th percentile among its peer group of 15,938 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, 0.0 Bluesky, 0.0 Mastodon, and 0.1 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 (22)

debianpatch availablevia nvd_reference
View patch
redhatpatch availablevia redhat_api
Product: Text-Only JBCS
View patch
redhatpatch availablevia redhat_api
Product: Red Hat JBoss Web Server 3 for RHEL 7Fixed in: tomcat8-0:8.0.36-24.ep7.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat JBoss Web Server 3 for RHEL 7Fixed in: tomcat-native-0:1.2.8-10.redhat_10.ep7.el7
View patch
redhatpatch availablevia nvd_reference
View patch
redhatpatch availablevia redhat_api
Product: JBoss Core Services on RHEL 6Fixed in: jbcs-httpd24-httpd-0:2.4.23-120.jbcs.el6
View patch
redhatpatch availablevia redhat_api
Product: JBoss Core Services on RHEL 6Fixed in: jbcs-httpd24-mod_security-0:2.9.1-19.GA.jbcs.el6
View patch
redhatpatch availablevia redhat_api
Product: JBoss Core Services on RHEL 6Fixed in: jbcs-httpd24-openssl-1:1.0.2h-13.jbcs.el6
View patch
redhatpatch availablevia redhat_api
Product: JBoss Core Services on RHEL 7Fixed in: jbcs-httpd24-httpd-0:2.4.23-120.jbcs.el7
View patch
redhatpatch availablevia redhat_api
Product: JBoss Core Services on RHEL 7Fixed in: jbcs-httpd24-mod_security-0:2.9.1-19.GA.jbcs.el7
View patch
redhatpatch availablevia redhat_api
Product: JBoss Core Services on RHEL 7Fixed in: jbcs-httpd24-openssl-1:1.0.2h-13.jbcs.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: openssl-1:1.0.2k-8.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat JBoss Web Server 3.1
View patch
redhatpatch availablevia redhat_api
Product: Red Hat JBoss Web Server 3 for RHEL 6Fixed in: log4j-eap6-0:1.2.16-12.redhat_3.1.ep6.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat JBoss Web Server 3 for RHEL 6Fixed in: tomcat7-0:7.0.70-22.ep7.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat JBoss Web Server 3 for RHEL 6Fixed in: tomcat8-0:8.0.36-24.ep7.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat JBoss Web Server 3 for RHEL 6Fixed in: tomcat-native-0:1.2.8-10.redhat_10.ep7.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat JBoss Web Server 3 for RHEL 7Fixed in: log4j-eap6-0:1.2.16-12.redhat_3.1.ep6.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat JBoss Web Server 3 for RHEL 7Fixed in: tomcat7-0:7.0.70-22.ep7.el7
View patch
redhatvendor investigatingvia redhat_api
Product: Red Hat JBoss Web Server 3Fixed in: openssl
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Virtualization 3Fixed in: mingw-virt-viewer
redhatend of lifevia redhat_api
Product: Red Hat JBoss Enterprise Web Server 1Fixed in: openssl

Vendor Advisories (1)

redhatCVE-2016-7056Moderate

openssl: ECDSA P-256 timing attack key recovery

Jan 10, 2017

References

rhn.redhat.com / errata/RHSA-2017-1415.html
Third Party Advisory
access.redhat.com / errata/RHSA-2017:1413
Third Party Advisory
access.redhat.com / errata/RHSA-2017:1414
Third Party Advisory
access.redhat.com / errata/RHSA-2017:1801
Third Party Advisory
access.redhat.com / errata/RHSA-2017:1802
Third Party Advisory
bugzilla.redhat.com / show_bug.cgi
Issue TrackingPatchThird Party Advisory
eprint.iacr.org / 2016/1195
Third Party Advisory
ftp.openbsd.org / pub/OpenBSD/patches/5.9/common/033_libcrypto.patch.sig
PatchThird Party Advisory
ftp.openbsd.org / pub/OpenBSD/patches/6.0/common/016_libcrypto.patch.sig
PatchThird Party Advisory
git.openssl.org
people.canonical.com / ~ubuntu-security/cve/2016/CVE-2016-7056.html
PatchThird Party Advisory
seclists.org / oss-sec/2017/q1/52
Mailing ListThird Party Advisory
security-tracker.debian.org / tracker/CVE-2016-7056
PatchThird Party AdvisoryVDB Entry
debian.org / security/2017/dsa-3773
Third Party Advisory
securityfocus.com / bid/95375
Third Party AdvisoryVDB Entry
securitytracker.com / id/1037575
PatchThird Party AdvisoryVDB Entry