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    CVE-2016-1833

    The htmlCurrentChar function 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, allows remote attackers to cause a denial of service (heap-based buffer over-read) via a crafted XML document.

    Published:Nov 27, 2015
    Last Modified:Apr 12, 2025
    EPS:May 20, 2016
    EPSS Score:0.01214
    CVSS Score:5.5

    Affected Products

    Vendor
    Apple
    Product
    Iphone Os
    Vendor
    Apple
    Product
    Mac Os X
    Vendor
    Apple
    Product
    Tvos
    Vendor
    Apple
    Product
    Watchos
    Vendor
    Canonical
    Product
    Ubuntu Linux
    Vendor
    Debian
    Product
    Debian Linux
    Vendor
    Mcafee
    Product
    Web Gateway
    Vendor
    Redhat
    Product
    Enterprise Linux
    Vendor
    Redhat
    Product
    Enterprise Linux Desktop
    Vendor
    Redhat
    Product
    Enterprise Linux Server
    Vendor
    Redhat
    Product
    Enterprise Linux Server Aus
    Vendor
    Redhat
    Product
    Enterprise Linux Server Eus
    Vendor
    Redhat
    Product
    Enterprise Linux Server Tus
    Vendor
    Redhat
    Product
    Enterprise Linux Workstation
    Vendor
    Redhat
    Product
    Jboss Core Services
    Vendor
    Xmlsoft
    Product
    Libxml2

    Exploits

    https://bugs.chromium.org/p/project-zero/issues/detail?id=636https://bugzilla.gnome.org/show_bug.cgi?id=758606https://bugs.chromium.org/p/project-zero/issues/detail?id=636https://bugzilla.gnome.org/show_bug.cgi?id=758606

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-540 Overread Buffers
    CAPEC-92 Forced Integer Overflow

    Related CVEs

    CVE-2026-87545 (CVSS 6.5) — Information leak in Mobile in Google Chrome on on iOS prior to 153.0.8010.36 allowed a remote attacker leverag…
    CVE-2026-87609 (CVSS 9.6) — Use after free in Sharing in Google Chrome on on iOS prior to 153.0.8010.36 allowed a remote attacker to execu…
    CVE-2026-87518 (CVSS 5.3) — Observable discrepancy in Safebrowsing in Google Chrome on on iOS prior to 153.0.8010.36 allowed a remote atta…
    CVE-2026-87482 (CVSS 5.9) — Cleartext transmission of sensitive data in HttpsUpgrades in Google Chrome on on iOS prior to 153.0.8010.36 al…
    CVE-2026-87517 (CVSS 3.1) — Race condition in Mobile in Google Chrome on on iOS prior to 153.0.8010.36 allowed a remote attacker leveragin…
    CVE-2026-85047 (CVSS 9.6) — Improper input validation in Transactions Platform in Google Chrome on on iOS prior to 152.0.7977.82 allowed a…
    CVE-2026-78964 (CVSS 9.6) — Use after free in Sync in Google Chrome on on iOS prior to 152.0.7977.65 allowed a remote attacker to potentia…
    CVE-2026-78957 (CVSS 5.5) — Information leak in Mobile in Google Chrome on on iOS prior to 152.0.7977.65 allowed a local attacker to obtai…
    CVE-2026-78981 (CVSS 6.5) — Information leak in Mobile in Google Chrome on on iOS prior to 152.0.7977.65 allowed a local attacker to poten…
    CVE-2026-79105 (CVSS 4.3) — Improper input validation in Mobile in Google Chrome on on iOS prior to 152.0.7977.65 allowed a remote attacke…

    References

    http://lists.apple.com/archives/security-announce/2016/May/msg00001.html
    http://lists.apple.com/archives/security-announce/2016/May/msg00002.html
    http://lists.apple.com/archives/security-announce/2016/May/msg00003.html
    http://lists.apple.com/archives/security-announce/2016/May/msg00004.html
    http://rhn.redhat.com/errata/RHSA-2016-2957.html
    http://www.oracle.com/technetwork/topics/security/bulletinjul2016-3090568.html
    http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html
    http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html
    http://www.securityfocus.com/bid/90691
    http://www.securitytracker.com/id/1035890
    http://www.ubuntu.com/usn/USN-2994-1
    http://xmlsoft.org/news.html
    https://access.redhat.com/errata/RHSA-2016:1292
    https://bugs.chromium.org/p/project-zero/issues/detail?id=636
    https://bugzilla.gnome.org/show_bug.cgi?id=758606
    https://git.gnome.org/browse/libxml2/commit/?id=0bcd05c5cd83dec3406c8f68b769b1d610c72f76
    https://kc.mcafee.com/corporate/index?page=content&id=SB10170
    https://support.apple.com/HT206564
    https://support.apple.com/HT206566
    https://support.apple.com/HT206567
    https://support.apple.com/HT206568
    https://www.debian.org/security/2016/dsa-3593
    https://www.tenable.com/security/tns-2016-18
    http://lists.apple.com/archives/security-announce/2016/May/msg00001.html
    http://lists.apple.com/archives/security-announce/2016/May/msg00002.html
    http://lists.apple.com/archives/security-announce/2016/May/msg00003.html
    http://lists.apple.com/archives/security-announce/2016/May/msg00004.html
    http://rhn.redhat.com/errata/RHSA-2016-2957.html
    http://www.oracle.com/technetwork/topics/security/bulletinjul2016-3090568.html
    http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html
    http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html
    http://www.securityfocus.com/bid/90691
    http://www.securitytracker.com/id/1035890
    http://www.ubuntu.com/usn/USN-2994-1
    http://xmlsoft.org/news.html
    https://access.redhat.com/errata/RHSA-2016:1292
    https://bugs.chromium.org/p/project-zero/issues/detail?id=636
    https://bugzilla.gnome.org/show_bug.cgi?id=758606
    https://git.gnome.org/browse/libxml2/commit/?id=0bcd05c5cd83dec3406c8f68b769b1d610c72f76
    https://kc.mcafee.com/corporate/index?page=content&id=SB10170
    https://support.apple.com/HT206564
    https://support.apple.com/HT206566
    https://support.apple.com/HT206567
    https://support.apple.com/HT206568
    https://www.debian.org/security/2016/dsa-3593
    https://www.tenable.com/security/tns-2016-18

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High