Is CVE-2016-7944 in the CISA KEV catalog?

No. CVE-2016-7944 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2016-7944?

CVE-2016-7944 has a CVSS v3 base score of 9.8 (CRITICAL).

What is the EPSS score for CVE-2016-7944?

CVE-2016-7944 has an EPSS score of 3.40% (87th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2016-7944?

Upgrade libxfixes on debian 11 to 1:5.0.3-1 or later. Fixes are available for 3 affected products.

CVE & CISA-KEV Catalog

CVE-2016-7944

CRITICALEPSS 87th pctl

9.8

CVSS v3

NVD

Description

Integer overflow in X.org libXfixes before 5.0.3 on 32-bit platforms might allow remote X servers to gain privileges via a length value of INT_MAX, which triggers the client to stop reading data and get out of sync.

CWE-190Integer Overflow CWE-264Permissions, Privileges, and Access Controls

How to fix

Remediation Available

libxfixesDebian

Fixed in:1:5.0.3-1CVE-2016-7944

libxfixesUbuntu

Fixed in:1:5.0.1-2ubuntu0.1~esm1USN-5437-1

libxfixes3Ubuntu

Fixed in:1:5.0.1-2ubuntu0.1~esm1USN-5437-1

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

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

3.40%probability of exploitation in 30 days

87thpercentile

Elevated risk: more likely to be exploited than 87% of all known CVEs.

References

Other references9

Related Vulnerabilities

Other CWE-190 (Integer Overflow) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2020-16040	Medium	6.5	100%	-	Fix
CVE-2019-11477	High	7.5	99%	-	Fix
CVE-2023-44443	High	7.8	94%	-	Fix
CVE-2014-0569	High	9.3	90%	-	-
CVE-2017-3599	High	7.5	90%	-	Fix
CVE-2023-21716	Critical	9.8	82%	-	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.