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CVE-2016-4493

21
FAUCET Score

CVE-2016-4493 is an out-of-bounds read vulnerability in the demangle_template_value_parm and do_hpacc_template_literal functions within the gnu libiberty library. This flaw allows remote attackers to trigger a denial of service (crash) by providing a specially crafted binary. With a CVSS score of 5.5 (Medium), this vulnerability requires user interaction (UI:R) and local access (AV:L) to exploit, leading to high availability impact (A:H) but no confidentiality or integrity impact. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
All Versions ImpactedCPE matchmatch criteria
cpe:2.3:a:gnu:libiberty:*:*:*:*:*:*:*:*

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
1.62%
Probability of exploitation in next 30 days
EPSS Percentile
73.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0162 is in the 84th percentile among its peer group of 5,758 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 (22)

redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: gcc
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: gdb
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: binutils
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: compat-gcc-295
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: compat-gcc-296
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: compat-gcc-32
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: compat-gcc-34
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: gdb
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: binutils
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: compat-gcc-32
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: compat-gcc-34
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: compat-gcc-44
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: gcc
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: gdb
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: compat-gcc-295
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: compat-gcc-296
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: compat-gcc-32
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: compat-gcc-34
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: gcc
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: binutils
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: gcc44
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: binutils220

Vendor Advisories (1)

redhatCVE-2016-4493Low

gcc: Read access violations

May 3, 2016

References

gcc.gnu.org / bugzilla/show_bug.cgi
Issue Tracking
gcc.gnu.org / ml/gcc-patches/2016-05/msg00223.html
PatchVendor Advisory
openwall.com / lists/oss-security/2016/05/05/5
Mailing ListPatchThird Party Advisory
securityfocus.com / bid/90014