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CVE-2016-5417

20
FAUCET Score

CVE-2016-5417 describes a memory leak vulnerability in the __res_vinit function within the IPv6 name server management code of the GNU C Library (glibc). This flaw allows remote attackers to trigger a denial of service by causing excessive memory consumption due to partially initialized internal resolver data structures. With a CVSS score of 7.5 (High), this vulnerability is easily exploitable over the network with low attack complexity, leading to high availability impact. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2.23CPE matchmatch criteria
cpe:2.3:a:gnu:glibc:*:*:*:*:*:*:*:*

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:N/A:H

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

Exploit Intelligence

EPSS Score
3.36%
Probability of exploitation in next 30 days
EPSS Percentile
87.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0336 is in the 78th 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

Vendor Advisories (1)

redhatCVE-2016-5417Low

glibc: per-thread memory leak in __res_vinit with IPv6 nameservers

Aug 2, 2016

References

sourceware.org / bugzilla/show_bug.cgi
Issue TrackingPatchThird Party AdvisoryVDB Entry
sourceware.org / git/gitweb.cgi
sourceware.org / ml/libc-alpha/2016-08/msg00212.html
Release Notes
openwall.com / lists/oss-security/2016/08/02/5
Mailing ListThird Party Advisory
securityfocus.com / bid/92257
Third Party AdvisoryVDB Entry