Is CVE-2016-1837 in the CISA KEV catalog?

No. CVE-2016-1837 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2016-1837?

CVE-2016-1837 has a CVSS v3 base score of 5.5 (MEDIUM).

What is the EPSS score for CVE-2016-1837?

CVE-2016-1837 has an EPSS score of 4.09% (90th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2016-1837?

Upgrade libxml2 on debian 11 to 2.9.3+dfsg1-1.1 or later. Fixes are available for 2 affected products.

CVE & CISA-KEV Catalog

CVE-2016-1837

MEDIUMEPSS 90th pctl

5.5

CVSS v3

NVD

Description

Multiple use-after-free vulnerabilities in the (1) htmlPArsePubidLiteral and (2) htmlParseSystemiteral functions in libxml2 before 2.9.4, as used in Apple iOS before 9.3.2, OS X before 10.11.5, tvOS before 9.2.1, and watchOS before 2.2.1, allow remote attackers to cause a denial of service via a crafted XML document.

CWE-416Use After Free

How to fix

Remediation Available

libxml2Debian

Fixed in:2.9.3+dfsg1-1.1CVE-2016-1837

libxml2Ubuntu

Fixed in:2.9.1+dfsg1-3ubuntu4.8USN-2994-1

Fixed in:2.9.3+dfsg1-1ubuntu0.1USN-2994-1

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 VectorLocal

Attack ComplexityLow

Privileges RequiredNone

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

4.09%probability of exploitation in 30 days

90thpercentile

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

References

Related Vulnerabilities

Other CWE-416 (Use After Free) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2019-0708	Critical	9.8	100%	KEV + Ransom	-
CVE-2021-31166	Critical	9.8	100%	KEV	Fix
CVE-2015-5119	Critical	9.8	99%	KEV	-
CVE-2010-3962	High	8.1	97%	KEV	-
CVE-2015-0313	Critical	9.8	96%	KEV	Fix
CVE-2017-9798	High	7.5	95%	-	Fix

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HTML

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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.