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CVE-2016-7444

20
FAUCET Score

CVE-2016-7444 describes a vulnerability in the gnutls_ocsp_resp_check_crt function within GnuTLS versions before 3.4.15 and 3.5.x before 3.5.4. This flaw allows remote attackers to bypass certificate validation by manipulating OCSP response serial lengths, potentially due to trailing bytes from memory allocation. With a CVSSv3 score of 7.5 (HIGH), this vulnerability is easily exploitable over the network with low attack complexity, leading to a high impact on integrity by circumventing security controls. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion, though it received limited media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 3.4.14CPE matchmatch criteria
cpe:2.3:a:gnu:gnutls:*:*:*:*:*:*:*:*
3.5.0CPE matchmatch criteria
cpe:2.3:a:gnu:gnutls:3.5.0:*:*:*:*:*:*:*
3.5.1CPE matchmatch criteria
cpe:2.3:a:gnu:gnutls:3.5.1:*:*:*:*:*:*:*
3.5.2CPE matchmatch criteria
cpe:2.3:a:gnu:gnutls:3.5.2:*:*:*:*:*:*:*
3.5.3CPE matchmatch criteria
cpe:2.3:a:gnu:gnutls:3.5.3:*:*:*:*:*:*:*

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:N/I:H/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
2.44%
Probability of exploitation in next 30 days
EPSS Percentile
82.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0244 is in the 69th percentile among its peer group of 51,506 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

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 (1)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: gnutls-0:3.3.26-9.el7
View patch

Vendor Advisories (1)

redhatCVE-2016-7444Low

gnutls: Incorrect certificate validation when using OCSP responses (GNUTLS-SA-2016-3)

Sep 2, 2016

References

lists.opensuse.org / opensuse-security-announce/2017-02/msg00005.html
access.redhat.com / errata/RHSA-2017:2292
gitlab.com / gnutls/gnutls/commit/964632f37dfdfb914ebc5e49db4fa29af35b1de9
Patch
lists.gnupg.org / pipermail/gnutls-devel/2016-September/008146.html
Mailing ListThird Party Advisory
gnutls.org / security.html
Vendor Advisory
securityfocus.com / bid/92893