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01 Record

CVE-2016-1837

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

UnratedPUBLISHEDCNA: apple
CNA base scoreUnratedNo CNA CVSS vector

02 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

03 Exploitation and scoring

Exploitation
Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
SSVC decision
Not assessed by CISA
EPSS probability
4.44% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 90.9% of scored records. A rank, not a probability.
NVD base score
5.5 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
NVD analysis status
Modified. NVD last modified this record on 2026-06-17.
Red Hat severity
Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2016-05-20 10:00Z10 YR AGO
Last updated
2024-08-05 23:10Z2 YR AGO
Reserved
2016-01-13
Assigning CNA
apple
Record state
PUBLISHED
Severity
Not rated by the issuing CNA
CNA CVSS vector
Not published by the issuing CNA
Weaknesses
Data version
5.1
Document digest
56e28bf0f44f8efa85786b73467d860af08a59406f62dd18e93992c30264f3e4

05 Affected products

VendorProductVersionsPlatforms
appleiphone_osNot specified—
applemac_os_xNot specified—
appletvosNot specified—
applewatchosNot specified—
canonicalubuntu_linuxNot specified—
debiandebian_linuxNot specified—
mcafeeweb_gatewayNot specified—
redhatenterprise_linuxNot specified—
redhatenterprise_linux_desktopNot specified—
redhatenterprise_linux_serverNot specified—
redhatenterprise_linux_server_ausNot specified—
redhatenterprise_linux_server_eusNot specified—
redhatenterprise_linux_server_tusNot specified—
redhatenterprise_linux_workstationNot specified—
redhatjboss_core_servicesNot specified—
redhatjboss_enterprise_web_serverNot specified—
xmlsoftlibxml2Not specified—

06 References

07 Fixed in

Debian 12

  • libxml2
    Fixed in 2.9.3+dfsg1-1.1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 13

  • libxml2
    Fixed in 2.9.3+dfsg1-1.1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 14

  • libxml2
    Fixed in 2.9.3+dfsg1-1.1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 14.04 LTS

  • libxml2
    Fixed in 2.9.1+dfsg1-3ubuntu4.8

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 16.04 LTS

  • libxml2
    Fixed in 2.9.3+dfsg1-1ubuntu0.1

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.