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    CVE-2015-4492

    Use-after-free vulnerability in the XMLHttpRequest::Open implementation in Mozilla Firefox before 40.0 and Firefox ESR 38.x before 38.2 might allow remote attackers to execute arbitrary code via a SharedWorker object that makes recursive calls to the open method of an XMLHttpRequest object.

    Published:Aug 11, 2015
    Last Modified:Apr 12, 2025
    EPS:Aug 16, 2015
    EPSS Score:0.02997
    CVSS Score:7.5

    Affected Products

    Vendor
    Canonical
    Product
    Ubuntu Linux
    Vendor
    Mozilla
    Product
    Firefox
    Vendor
    Opensuse
    Product
    Opensuse
    Vendor
    Oracle
    Product
    Solaris
    Vendor
    Redhat
    Product
    Enterprise Linux

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-416 Use After Free

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

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    CVE-2026-47337 (CVSS 3.3) — Ubuntu Linux 6.8, 6.17 and 7.0 contain SAUCE patches with a possible NULL pointer dereference in the handling …
    CVE-2026-47336 (CVSS 3.3) — Ubuntu Linux 6.8 contains SAUCE patches with a possible use of an uninitialized variable in AppArmor AF_INET/A…
    CVE-2026-47335 (CVSS 5.5) — Ubuntu Linux 6.8 contains SAUCE patches with a possible NULL pointer dereference in the handling of AppArmor n…
    CVE-2026-47334 (CVSS 5.5) — Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which incorrectly sleep while holding a spinlock…
    CVE-2026-47333 (CVSS 7.8) — Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which can potentially incorrectly compute the si…
    CVE-2026-47332 (CVSS 5.5) — Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which incorrectly validate the size of an intern…
    CVE-2026-47331 (CVSS 7.8) — Ubuntu Linux 6.8 contains AppArmor SAUCE patches which fail to acquire a lock when modifying a linked list. An…
    CVE-2026-47330 (CVSS 3.3) — Ubuntu Linux 6.8, 7.17 and 7.0 contain AppArmor SAUCE patches which can, under certain circumstances, use an u…

    References

    http://lists.opensuse.org/opensuse-security-announce/2015-08/msg00014.html
    http://lists.opensuse.org/opensuse-security-announce/2015-08/msg00015.html
    http://lists.opensuse.org/opensuse-security-announce/2015-08/msg00021.html
    http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00016.html
    http://lists.opensuse.org/opensuse-security-announce/2015-11/msg00025.html
    http://lists.opensuse.org/opensuse-updates/2015-08/msg00030.html
    http://lists.opensuse.org/opensuse-updates/2015-08/msg00031.html
    http://rhn.redhat.com/errata/RHSA-2015-1586.html
    http://www.debian.org/security/2015/dsa-3333
    http://www.mozilla.org/security/announce/2015/mfsa2015-92.html
    http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html
    http://www.securityfocus.com/bid/76297
    http://www.securitytracker.com/id/1033247
    http://www.ubuntu.com/usn/USN-2702-1
    http://www.ubuntu.com/usn/USN-2702-2
    http://www.ubuntu.com/usn/USN-2702-3
    https://bugzilla.mozilla.org/show_bug.cgi?id=1185820
    https://security.gentoo.org/glsa/201605-06
    http://lists.opensuse.org/opensuse-security-announce/2015-08/msg00014.html
    http://lists.opensuse.org/opensuse-security-announce/2015-08/msg00015.html
    http://lists.opensuse.org/opensuse-security-announce/2015-08/msg00021.html
    http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00016.html
    http://lists.opensuse.org/opensuse-security-announce/2015-11/msg00025.html
    http://lists.opensuse.org/opensuse-updates/2015-08/msg00030.html
    http://lists.opensuse.org/opensuse-updates/2015-08/msg00031.html
    http://rhn.redhat.com/errata/RHSA-2015-1586.html
    http://www.debian.org/security/2015/dsa-3333
    http://www.mozilla.org/security/announce/2015/mfsa2015-92.html
    http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html
    http://www.securityfocus.com/bid/76297
    http://www.securitytracker.com/id/1033247
    http://www.ubuntu.com/usn/USN-2702-1
    http://www.ubuntu.com/usn/USN-2702-2
    http://www.ubuntu.com/usn/USN-2702-3
    https://bugzilla.mozilla.org/show_bug.cgi?id=1185820
    https://security.gentoo.org/glsa/201605-06

    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