Is CVE-2016-6323 in the CISA KEV catalog?

No. CVE-2016-6323 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2016-6323?

CVE-2016-6323 has a CVSS v3 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2016-6323?

CVE-2016-6323 has an EPSS score of 3.84% (89th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2016-6323?

Upgrade glibc on debian 11 to 2.24-1 or later. Fixes are available for 4 affected products.

CVE & CISA-KEV Catalog

CVE-2016-6323

HIGHEPSS 89th pctl

7.5

CVSS v3

NVD

Description

The makecontext function in the GNU C Library (aka glibc or libc6) before 2.25 creates execution contexts incompatible with the unwinder on ARM EABI (32-bit) platforms, which might allow context-dependent attackers to cause a denial of service (hang), as demonstrated by applications compiled using gccgo, related to backtrace generation.

CWE-284Improper Access Control

How to fix

Remediation Available

glibcDebian

Fixed in:2.24-1CVE-2016-6323

eglibcUbuntu

Fixed in:2.19-0ubuntu6.10USN-3239-1

glibcUbuntu

Fixed in:2.23-0ubuntu6USN-3239-1

libc6Ubuntu

Fixed in:2.19-0ubuntu6.10USN-3239-1

Fixed in:2.23-0ubuntu6USN-3239-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

3.84%probability of exploitation in 30 days

89thpercentile

Elevated risk: more likely to be exploited than 89% of all known CVEs.

References

Third-Party Advisory2

Issue Tracking1

sourceware.org

Other references7

Related Vulnerabilities

Other CWE-284 (Improper Access Control) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-27350	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2019-1653	High	7.5	100%	KEV	-
CVE-2023-23752	Medium	5.3	100%	KEV	Fix
CVE-2023-29298	High	7.5	100%	KEV	-
CVE-2023-38205	High	7.5	100%	KEV	-
CVE-2024-27348	Critical	9.8	99%	KEV	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-05-06.