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CVE-2016-9427

32
FAUCET Score

CVE-2016-9427 is an integer overflow vulnerability in the bdwgc garbage collector, affecting bdwgc_project, Debian, and OpenSUSE. This critical vulnerability (CVSS 9.8) allows unauthenticated remote attackers to trigger a heap buffer overflow, leading to denial of service or potentially arbitrary code execution through huge memory allocations. Despite its high severity, there is no evidence of active exploitation, publicly available exploit code, or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 7.4.4CPE matchmatch criteria
cpe:2.3:a:bdwgc_project:bdwgc:*:*:*:*:*:*:*:*
9.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
42.1CPE matchmatch criteria
cpe:2.3:o:opensuse:leap:42.1:*:*:*:*:*:*:*
42.2CPE matchmatch criteria
cpe:2.3:o:opensuse:leap:42.2:*:*:*:*:*:*:*
13.2CPE matchmatch criteria
cpe:2.3:o:opensuse:opensuse:13.2:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

CVSS:3.1/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
3.1

Exploit Intelligence

EPSS Score
4.14%
Probability of exploitation in next 30 days
EPSS Percentile
89.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0414 is in the 83rd percentile among its peer group of 36,835 CVEs.

Social Chatter

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 (4)

github_advisorypatch availablevia nvd_reference
View patch
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: gc
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: gcc
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: gc

Vendor Advisories (1)

redhatCVE-2016-9427Moderate

gc: Integer overflow in GC_MALLOC_ATOMIC

Aug 21, 2016

References

lists.opensuse.org / opensuse-updates/2016-12/msg00089.html
Mailing ListThird Party Advisory
lists.opensuse.org / opensuse-updates/2016-12/msg00115.html
Mailing ListThird Party Advisory
github.com / ivmai/bdwgc/issues/135
Issue TrackingPatch
lists.debian.org / debian-lts-announce/2022/03/msg00039.html
Mailing ListThird Party Advisory
openwall.com / lists/oss-security/2016/11/18/3
Mailing ListThird Party Advisory
securityfocus.com / bid/94407
Third Party AdvisoryVDB Entry