Is CVE-2016-6223 in the CISA KEV catalog?

No. CVE-2016-6223 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2016-6223?

CVE-2016-6223 has a CVSS v3 base score of 9.1 (CRITICAL).

What is the EPSS score for CVE-2016-6223?

CVE-2016-6223 has an EPSS score of 3.27% (87th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2016-6223?

Upgrade tiff on debian 11 to 4.0.6-2 or later. Fixes are available for 4 affected products.

CVE & CISA-KEV Catalog

CVE-2016-6223

CRITICALEPSS 87th pctl

9.1

CVSS v3

NVD

Description

The TIFFReadRawStrip1 and TIFFReadRawTile1 functions in tif_read.c in libtiff before 4.0.7 allows remote attackers to cause a denial of service (crash) or possibly obtain sensitive information via a negative index in a file-content buffer.

CWE-189

How to fix

Remediation Available

tiffDebian

Fixed in:4.0.6-2CVE-2016-6223

libtiff-toolsUbuntu

Fixed in:4.0.3-7ubuntu0.6USN-3212-1

Fixed in:4.0.6-1ubuntu0.1USN-3212-1

libtiff5Ubuntu

Fixed in:4.0.3-7ubuntu0.6USN-3212-1

Fixed in:4.0.6-1ubuntu0.1USN-3212-1

tiffUbuntu

Fixed in:4.0.3-7ubuntu0.6USN-3212-1

Fixed in:4.0.6-1ubuntu0.1USN-3212-1

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

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

3.27%probability of exploitation in 30 days

87thpercentile

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

References

Patch1

libtiff.maptools.org

Mailing List2

Other references3

Related Vulnerabilities

Other CWE-189 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2015-1538	High	10.0	99%	-	-
CVE-2006-3747	High	7.6	96%	-	Fix
CVE-2007-0071	High	9.3	93%	-	-
CVE-2015-3829	High	10.0	90%	-	-
CVE-2015-3864	High	10.0	87%	-	-
CVE-2015-1539	High	10.0	86%	-	-

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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 2026-05-13.