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CVE-2018-6759

19
FAUCET Score

CVE-2018-6759 describes a denial-of-service vulnerability in the Binary File Descriptor (BFD) library (libbfd), specifically within the bfd_get_debug_link_info_1 function in GNU Binutils 2.30. This flaw, caused by an unchecked strnlen operation, allows remote attackers to trigger a segmentation fault by providing a specially crafted ELF file. The vulnerability has a CVSS score of 5.5 (Medium), indicating a local attack vector with low complexity, requiring user interaction (UI:R), and primarily leading to high availability impact (A:H). There is no impact on confidentiality or integrity. Currently, there is no evidence of active exploitation, nor are there publicly available exploit modules in Metasploit, Nuclei, or ExploitDB. The CVE has received minimal community discussion and media coverage, suggesting a low level of public awareness or concern.

Impacted Technologies

VendorProductVersion(s)CPE
2.30CPE matchmatch criteria
cpe:2.3:a:gnu:binutils:2.30:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

5.5MEDIUM

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

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

Exploit Intelligence

EPSS Score
2.09%
Probability of exploitation in next 30 days
EPSS Percentile
79.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0209 is in the 90th percentile among its peer group of 5,765 CVEs.

Social Chatter

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

Vendor Patches (1)

redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: binutils

Vendor Advisories (1)

redhatCVE-2018-6759Low

binutils: Unchecked strnlen in opncls.c:bfd_get_debug_link_info_1() can allow lead to denial of service

Feb 6, 2018

References

lists.opensuse.org / opensuse-security-announce/2019-10/msg00072.html
lists.opensuse.org / opensuse-security-announce/2019-11/msg00008.html
security.gentoo.org / glsa/201811-17
Third Party Advisory
sourceware.org / bugzilla/show_bug.cgi
Issue TrackingThird Party Advisory
securityfocus.com / bid/103030
Third Party AdvisoryVDB Entry