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CVE-2015-8778

26
FAUCET Score

CVE-2015-8778 is an integer overflow vulnerability in the GNU C Library (glibc) versions prior to 2.23, affecting various Linux distributions including Debian, Fedora, and openSUSE. This critical vulnerability, rated 9.8 CVSSv3, allows unauthenticated, remote attackers to trigger a denial of service or potentially execute arbitrary code through out-of-bounds heap-memory access via the size argument to the __hcreate_r function. While no active exploitation, public exploit code, or significant community discussion has been observed, its high severity and widespread impact on core system libraries warrant attention.

Impacted Technologies

VendorProductVersion(s)CPE
23CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:23:*:*:*:*:*:*:*
8.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
12.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:lts:*:*:*
14.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
15.10CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:15.10:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
5.51%
Probability of exploitation in next 30 days
EPSS Percentile
92.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0551 is in the 86th percentile among its peer group of 36,897 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

No media coverage found for this CVE.

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 (6)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: glibc-0:2.12-1.209.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: glibc-0:2.17-196.el7
View patch
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: compat-glibc
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: glibc
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: compat-glibc
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: compat-glibc

Vendor Advisories (1)

redhatCVE-2015-8778Moderate

glibc: Integer overflow in hcreate and hcreate_r

Apr 10, 2015

References

lists.fedoraproject.org / pipermail/package-announce/2016-May/184626.html
Third Party Advisory
lists.opensuse.org / opensuse-security-announce/2016-02/msg00036.html
Third Party Advisory
lists.opensuse.org / opensuse-security-announce/2016-02/msg00037.html
Third Party Advisory
lists.opensuse.org / opensuse-security-announce/2016-02/msg00038.html
Third Party Advisory
lists.opensuse.org / opensuse-security-announce/2016-02/msg00039.html
Third Party Advisory
lists.opensuse.org / opensuse-security-announce/2016-02/msg00042.html
Third Party Advisory
packetstormsecurity.com / files/154361/Cisco-Device-Hardcoded-Credentials-GNU-glibc-BusyBox.html
rhn.redhat.com / errata/RHSA-2017-0680.html
access.redhat.com / errata/RHSA-2017:1916
seclists.org / fulldisclosure/2019/Sep/7
seclists.org / bugtraq/2019/Sep/7
security.gentoo.org / glsa/201602-02
Third Party Advisory
security.gentoo.org / glsa/201702-11
sourceware.org / bugzilla/show_bug.cgi
Issue Tracking
sourceware.org / ml/libc-alpha/2016-02/msg00502.html
Vendor Advisory
debian.org / security/2016/dsa-3480
debian.org / security/2016/dsa-3481
openwall.com / lists/oss-security/2016/01/19/11
Third Party Advisory
openwall.com / lists/oss-security/2016/01/20/1
Third Party Advisory
securityfocus.com / bid/83275
ubuntu.com / usn/USN-2985-1
Third Party Advisory
ubuntu.com / usn/USN-2985-2
Third Party Advisory