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    CVE-2018-5187

    Memory safety bugs present in Firefox 60 and Firefox ESR 60. Some of these bugs showed evidence of memory corruption and we presume that with enough effort that some of these could be exploited to run arbitrary code. This vulnerability affects Thunderbird < 60, Firefox ESR < 60.1, and Firefox < 61.

    Published:Jun 26, 2018
    Last Modified:Nov 25, 2025
    EPS:Oct 18, 2018
    EPSS Score:0.02336
    CVSS Score:9.8

    Affected Products

    Vendor
    Canonical
    Product
    Ubuntu Linux
    Vendor
    Debian
    Product
    Debian Linux
    Vendor
    Mozilla
    Product
    Firefox
    Vendor
    Mozilla
    Product
    Thunderbird

    Exploits

    No exploit reference

    Related CVEs

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    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…
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    References

    http://www.securityfocus.com/bid/104556
    https://bugzilla.mozilla.org/buglist.cgi?bug_id=1461324%2C1414829%2C1395246%2C1467938%2C1461619%2C1425930%2C1438556%2C1454285%2C1459568%2C1463884
    https://lists.debian.org/debian-lts-announce/2018/11/msg00011.html
    https://security.gentoo.org/glsa/201810-01
    https://security.gentoo.org/glsa/201811-13
    https://usn.ubuntu.com/3705-1/
    https://www.debian.org/security/2018/dsa-4295
    https://www.mozilla.org/security/advisories/mfsa2018-15/
    https://www.mozilla.org/security/advisories/mfsa2018-16/
    https://www.mozilla.org/security/advisories/mfsa2018-19/
    http://www.securityfocus.com/bid/104556
    https://bugzilla.mozilla.org/buglist.cgi?bug_id=1461324%2C1414829%2C1395246%2C1467938%2C1461619%2C1425930%2C1438556%2C1454285%2C1459568%2C1463884
    https://lists.debian.org/debian-lts-announce/2018/11/msg00011.html
    https://security.gentoo.org/glsa/201810-01
    https://security.gentoo.org/glsa/201811-13
    https://usn.ubuntu.com/3705-1/
    https://www.debian.org/security/2018/dsa-4295
    https://www.mozilla.org/security/advisories/mfsa2018-15/
    https://www.mozilla.org/security/advisories/mfsa2018-16/
    https://www.mozilla.org/security/advisories/mfsa2018-19/

    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