Is CVE-2016-5252 in the CISA KEV catalog?

No. CVE-2016-5252 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2016-5252?

CVE-2016-5252 has a CVSS v3 base score of 8.8 (HIGH).

What is the EPSS score for CVE-2016-5252?

CVE-2016-5252 has an EPSS score of 3.06% (86th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2016-5252?

Upgrade firefox on debian unstable to 48.0-1 or later. Fixes are available for 2 affected products.

CVE & CISA-KEV Catalog

CVE-2016-5252

HIGHEPSS 86th pctl

8.8

CVSS v3

NVD

Description

Stack-based buffer underflow in the mozilla::gfx::BasePoint4d function in Mozilla Firefox before 48.0 and Firefox ESR 45.x before 45.3 allows remote attackers to execute arbitrary code via crafted two-dimensional graphics data that is mishandled during clipping-region calculations.

CWE-119Buffer Overflow

How to fix

Remediation Available

firefoxDebian

Fixed in:48.0-1CVE-2016-5252

firefoxUbuntu

Fixed in:48.0+build2-0ubuntu0.14.04.1USN-3044-1

Fixed in:48.0+build2-0ubuntu0.16.04.1USN-3044-1

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 InteractionRequired

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

3.06%probability of exploitation in 30 days

86thpercentile

Elevated risk: more likely to be exploited than 86% of all known CVEs.

References

Vendor Advisory1

mozilla.org

Third-Party Advisory1

oracle.com

Issue Tracking1

bugzilla.mozilla.org

Other references8

Related Vulnerabilities

Other CWE-119 (Buffer Overflow) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-4966	Critical	9.4	100%	KEV + Ransom	Fix
CVE-2017-11882	High	7.8	100%	KEV + Ransom	-
CVE-2020-0796	Critical	10.0	100%	KEV + Ransom	-
CVE-2008-4250	Critical	9.8	99%	KEV	-
CVE-2017-15944	Critical	9.8	98%	KEV	Fix
CVE-2015-0014	High	10.0	97%	-	-

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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.