Is CVE-2016-6520 in the CISA KEV catalog?

No. CVE-2016-6520 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2016-6520?

CVE-2016-6520 has a CVSS v3 base score of 9.1 (CRITICAL).

What is the EPSS score for CVE-2016-6520?

CVE-2016-6520 has an EPSS score of 4.22% (90th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2016-6520?

Upgrade ImageMagick Q16 to 7.0.2-7 or later. Fixes are available for 2 affected products.

CVE & CISA-KEV Catalog

CVE-2016-6520

CRITICALEPSS 90th pctl

9.1

CVSS v3

NVD

Description

Buffer overflow in MagickCore/enhance.c in ImageMagick before 7.0.2-7 allows remote attackers to have unspecified impact via vectors related to pixel cache morphology.

CWE-125Out-of-bounds Read

How to fix

Remediation Available

ImageMagick Q16Windows application

Affected:7.0.0-0 7.0.2-7Fixed in:7.0.2-7ImageMagick Studio LLC

ImageMagick Q16-HDRIWindows application

Affected:7.0.0-0 7.0.2-7Fixed in:7.0.2-7ImageMagick Studio LLC

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

Exploit Intelligence

4.22%probability of exploitation in 30 days

90thpercentile

Elevated risk: more likely to be exploited than 90% of all known CVEs.

References

Patch4

Vendor Advisory1

imagemagick.org

Related Vulnerabilities

Other CWE-125 (Out-of-bounds Read) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2014-0160	High	7.5	100%	KEV	Fix
CVE-2025-5777	High	7.5	100%	KEV + Ransom	Fix
CVE-2021-4034	High	7.8	95%	KEV	Fix
CVE-2023-21769	High	7.5	92%	-	Fix
CVE-2023-49285	High	8.6	89%	-	Fix
CVE-2020-8794	Critical	9.8	89%	-	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.