CVE Feed

    Dashboard / CVE / CVE-2021-29964

    CVE-2021-29964

    A locally-installed hostile program could send `WM_COPYDATA` messages that Firefox would process incorrectly, leading to an out-of-bounds read. *This bug only affects Firefox on Windows. Other operating systems are unaffected.*. This vulnerability affects Thunderbird < 78.11, Firefox < 89, and Firefox ESR < 78.11.

    Published:Jun 1, 2021
    Last Modified:Nov 21, 2024
    EPS:Jun 24, 2021
    EPSS Score:0.0031
    CVSS Score:7.1

    Affected Products

    Vendor
    Microsoft
    Product
    Windows
    Vendor
    Mozilla
    Product
    Firefox
    Vendor
    Mozilla
    Product
    Firefox Esr
    Vendor
    Mozilla
    Product
    Thunderbird

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-125 Out-of-bounds Read

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-540 Overread Buffers

    Related CVEs

    CVE-2026-87602 (CVSS 4.7) — Out of bounds read in ANGLE in Google Chrome on on Windows prior to 153.0.8010.36 allowed a remote attacker to…
    CVE-2026-87509 (CVSS 8.1) — Incorrect authorization in Updater in Google Chrome on on Windows prior to 153.0.8010.36 allowed a local attac…
    CVE-2026-87618 (CVSS 8.3) — Incorrect reference resolution in Storage in Google Chrome on on Windows prior to 153.0.8010.36 allowed a remo…
    CVE-2026-87653 (CVSS 5.4) — UI misrepresentation in FullScreen in Google Chrome on on Windows prior to 153.0.8010.36 allowed a remote atta…
    CVE-2026-87528 (CVSS 9.6) — Type confusion in Rust in Google Chrome on on Windows prior to 153.0.8010.36 allowed a remote attacker to pote…
    CVE-2026-87644 (CVSS 8.3) — Incorrect authorization in Views in Google Chrome on on Windows prior to 153.0.8010.36 allowed a remote attack…
    CVE-2026-87616 (CVSS 8.3) — Improper initialization in Views in Google Chrome on on Windows prior to 153.0.8010.36 allowed a remote attack…
    CVE-2026-87454 (CVSS 6.5) — Information leak in Enterprise in Google Chrome on on Windows prior to 153.0.8010.36 allowed a remote attacker…
    CVE-2026-87494 (CVSS 9.6) — Use after free in Browser in Google Chrome on on Windows prior to 153.0.8010.36 allowed a remote attacker leve…
    CVE-2026-87530 (CVSS 8.1) — Uncontrolled search path element in CredentialProvider in Google Chrome on on Windows prior to 153.0.8010.36 a…

    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