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    CVE-2023-34416

    Memory safety bugs present in Firefox 113, Firefox ESR 102.11, and Thunderbird 102.12. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox ESR < 102.12, Firefox < 114, and Thunderbird < 102.12.

    Published:Jun 6, 2023
    Last Modified:Feb 13, 2025
    EPS:Jun 19, 2023
    EPSS Score:0.00311
    CVSS Score:9.8

    Affected Products

    Vendor
    Mozilla
    Product
    Firefox
    Vendor
    Mozilla
    Product
    Firefox Esr
    Vendor
    Mozilla
    Product
    Thunderbird
    Vendor
    Redhat
    Product
    Enterprise Linux
    Vendor
    Redhat
    Product
    Rhel Aus
    Vendor
    Redhat
    Product
    Rhel E4s
    Vendor
    Redhat
    Product
    Rhel Eus
    Vendor
    Redhat
    Product
    Rhel Tus

    Exploits

    No exploit reference

    Related CVEs

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    CVE-2026-84143 (CVSS 9.8) — Internally found bugs present in Thunderbird 154, Thunderbird ESR 153.1 and Thunderbird ESR 140.14. Some of th…
    CVE-2026-84142 (CVSS 9.8) — Internally found bugs present in Thunderbird 154. Some of these bugs showed evidence of memory corruption or a…
    CVE-2026-84141 (CVSS 9.8) — Integer overflow in the Graphics: ImageLib component. This vulnerability was fixed in Firefox 155, Firefox ESR…
    CVE-2026-84140 (CVSS 9.8) — Site isolation issue in the DOM: Navigation component. This vulnerability was fixed in Firefox 155, Firefox ES…
    CVE-2026-84139 (CVSS 6.1) — Clickjacking issue in the DOM: Events component. This vulnerability was fixed in Firefox 155, Firefox ESR 153.…
    CVE-2026-84138 (CVSS 6.5) — Denial-of-service in the PDF Viewer component. This vulnerability was fixed in Firefox 155 and Thunderbird 155…
    CVE-2026-84137 (CVSS 4.3) — Spoofing issue in the DOM: Core & HTML component. This vulnerability was fixed in Firefox 155, Firefox ESR 153…
    CVE-2026-84136 (CVSS 6.1) — Other issue in the DOM: Navigation component. This vulnerability was fixed in Firefox 155, Firefox ESR 153.2, …
    CVE-2026-84135 (CVSS 9.8) — Other issue in Firefox Focus for Android. This vulnerability was fixed in Firefox 155.…

    References

    https://bugzilla.mozilla.org/buglist.cgi?bug_id=1752703%2C1818394%2C1826875%2C1827340%2C1827655%2C1828065%2C1830190%2C1830206%2C1830795%2C1833339
    https://security.gentoo.org/glsa/202312-03
    https://security.gentoo.org/glsa/202401-10
    https://www.mozilla.org/security/advisories/mfsa2023-19/
    https://www.mozilla.org/security/advisories/mfsa2023-20/
    https://www.mozilla.org/security/advisories/mfsa2023-21/
    https://bugzilla.mozilla.org/buglist.cgi?bug_id=1752703%2C1818394%2C1826875%2C1827340%2C1827655%2C1828065%2C1830190%2C1830206%2C1830795%2C1833339
    https://security.gentoo.org/glsa/202312-03
    https://security.gentoo.org/glsa/202401-10
    https://www.mozilla.org/security/advisories/mfsa2023-19/
    https://www.mozilla.org/security/advisories/mfsa2023-20/
    https://www.mozilla.org/security/advisories/mfsa2023-21/

    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