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Following is the list of latest published vulnerabilities. You can filter the list based on the severity of the vulnerability, whether it is actively exploited (also known as CISA KEV List) or remotely exploitable. You can also sort the list based on the published date, last updated date, or CVSS score.
Latest Critical Actively Exploited Remotely Exploitable
Published Last Updated CVSS Score

  • 8.8

    HIGH
    CVE-2021-38510

    The executable file warning was not presented when downloading .inetloc files, which, due to a flaw in Mac OS, can run commands on a user's computer.*Note: This issue only affected Mac OS operating systems. Other operating systems are unaffected.*. This v... Read more

    Affected Products : firefox firefox_esr thunderbird macos
    • EPSS Score: %0.47
    • Published: Dec. 08, 2021
    • Modified: Nov. 21, 2024

  • 4.3

    MEDIUM
    CVE-2021-38509

    Due to an unusual sequence of attacker-controlled events, a Javascript alert() dialog with arbitrary (although unstyled) contents could be displayed over top an uncontrolled webpage of the attacker's choosing. This vulnerability affects Firefox < 94, Thun... Read more

    • EPSS Score: %0.40
    • Published: Dec. 08, 2021
    • Modified: Nov. 21, 2024

  • 4.3

    MEDIUM
    CVE-2021-38508

    By displaying a form validity message in the correct location at the same time as a permission prompt (such as for geolocation), the validity message could have obscured the prompt, resulting in the user potentially being tricked into granting the permiss... Read more

    • EPSS Score: %0.32
    • Published: Dec. 08, 2021
    • Modified: Nov. 21, 2024

  • 6.5

    MEDIUM
    CVE-2021-38507

    The Opportunistic Encryption feature of HTTP2 (RFC 8164) allows a connection to be transparently upgraded to TLS while retaining the visual properties of an HTTP connection, including being same-origin with unencrypted connections on port 80. However, if ... Read more

    • EPSS Score: %0.34
    • Published: Dec. 08, 2021
    • Modified: Nov. 21, 2024

  • 4.3

    MEDIUM
    CVE-2021-38506

    Through a series of navigations, Firefox could have entered fullscreen mode without notification or warning to the user. This could lead to spoofing attacks on the browser UI including phishing. This vulnerability affects Firefox < 94, Thunderbird < 91.3,... Read more

    • EPSS Score: %0.24
    • Published: Dec. 08, 2021
    • Modified: Nov. 21, 2024

  • 6.5

    MEDIUM
    CVE-2021-38505

    Microsoft introduced a new feature in Windows 10 known as Cloud Clipboard which, if enabled, will record data copied to the clipboard to the cloud, and make it available on other computers in certain scenarios. Applications that wish to prevent copied dat... Read more

    • EPSS Score: %0.44
    • Published: Dec. 08, 2021
    • Modified: Nov. 21, 2024

  • 8.8

    HIGH
    CVE-2021-38504

    When interacting with an HTML input element's file picker dialog with webkitdirectory set, a use-after-free could have resulted, leading to memory corruption and a potentially exploitable crash. This vulnerability affects Firefox < 94, Thunderbird < 91.3,... Read more

    • EPSS Score: %0.42
    • Published: Dec. 08, 2021
    • Modified: Nov. 21, 2024

  • 10.0

    CRITICAL
    CVE-2021-38503

    The iframe sandbox rules were not correctly applied to XSLT stylesheets, allowing an iframe to bypass restrictions such as executing scripts or navigating the top-level frame. This vulnerability affects Firefox < 94, Thunderbird < 91.3, and Firefox ESR < ... Read more

    • EPSS Score: %1.39
    • Published: Dec. 08, 2021
    • Modified: Nov. 21, 2024

  • 5.9

    MEDIUM
    CVE-2021-38502

    Thunderbird ignored the configuration to require STARTTLS security for an SMTP connection. A MITM could perform a downgrade attack to intercept transmitted messages, or could take control of the authenticated session to execute SMTP commands chosen by the... Read more

    Affected Products : thunderbird debian_linux
    • EPSS Score: %0.46
    • Published: Nov. 03, 2021
    • Modified: Nov. 21, 2024

  • 8.8

    HIGH
    CVE-2021-38501

    Mozilla developers reported memory safety bugs present in Firefox 92 and Firefox ESR 91.1. 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 v... Read more

    Affected Products : firefox firefox_esr thunderbird
    • EPSS Score: %0.88
    • Published: Nov. 03, 2021
    • Modified: Nov. 21, 2024

  • 8.8

    HIGH
    CVE-2021-38500

    Mozilla developers reported memory safety bugs present in Firefox 92 and Firefox ESR 91.1. 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 v... Read more

    • EPSS Score: %2.20
    • Published: Nov. 03, 2021
    • Modified: Nov. 21, 2024

  • 8.8

    HIGH
    CVE-2021-38499

    Mozilla developers reported memory safety bugs present in Firefox 92. 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 ... Read more

    Affected Products : firefox
    • EPSS Score: %0.42
    • Published: Nov. 03, 2021
    • Modified: Nov. 21, 2024

  • 7.5

    HIGH
    CVE-2021-38498

    During process shutdown, a document could have caused a use-after-free of a languages service object, leading to memory corruption and a potentially exploitable crash. This vulnerability affects Firefox < 93, Thunderbird < 91.2, and Firefox ESR < 91.2.... Read more

    Affected Products : firefox firefox_esr thunderbird
    • EPSS Score: %0.36
    • Published: Nov. 03, 2021
    • Modified: Nov. 21, 2024

  • 6.5

    MEDIUM
    CVE-2021-38497

    Through use of reportValidity() and window.open(), a plain-text validation message could have been overlaid on another origin, leading to possible user confusion and spoofing attacks. This vulnerability affects Firefox < 93, Thunderbird < 91.2, and Firefo... Read more

    Affected Products : firefox firefox_esr thunderbird
    • EPSS Score: %0.20
    • Published: Nov. 03, 2021
    • Modified: Nov. 21, 2024

  • 8.8

    HIGH
    CVE-2021-38496

    During operations on MessageTasks, a task may have been removed while it was still scheduled, resulting in memory corruption and a potentially exploitable crash. This vulnerability affects Thunderbird < 78.15, Thunderbird < 91.2, Firefox ESR < 91.2, Firef... Read more

    • EPSS Score: %1.24
    • Published: Nov. 03, 2021
    • Modified: Nov. 21, 2024

  • 8.8

    HIGH
    CVE-2021-38495

    Mozilla developers reported memory safety bugs present in Thunderbird 78.13.0. 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... Read more

    Affected Products : firefox_esr thunderbird
    • EPSS Score: %0.44
    • Published: Nov. 03, 2021
    • Modified: Nov. 21, 2024

  • 8.8

    HIGH
    CVE-2021-38494

    Mozilla developers reported memory safety bugs present in Firefox 91. 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 ... Read more

    Affected Products : firefox
    • EPSS Score: %0.42
    • Published: Nov. 03, 2021
    • Modified: Nov. 21, 2024

  • 8.8

    HIGH
    CVE-2021-38493

    Mozilla developers reported memory safety bugs present in Firefox 91 and Firefox ESR 78.13. 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 ... Read more

    Affected Products : firefox firefox_esr thunderbird
    • EPSS Score: %0.33
    • Published: Nov. 03, 2021
    • Modified: Nov. 21, 2024

  • 6.5

    MEDIUM
    CVE-2021-38492

    When delegating navigations to the operating system, Firefox would accept the `mk` scheme which might allow attackers to launch pages and execute scripts in Internet Explorer in unprivileged mode. *This bug only affects Firefox for Windows. Other operatin... Read more

    Affected Products : firefox firefox_esr thunderbird windows
    • EPSS Score: %0.44
    • Published: Nov. 03, 2021
    • Modified: Nov. 21, 2024

  • 6.5

    MEDIUM
    CVE-2021-38491

    Mixed-content checks were unable to analyze opaque origins which led to some mixed content being loaded. This vulnerability affects Firefox < 92.... Read more

    Affected Products : firefox
    • EPSS Score: %0.39
    • Published: Nov. 03, 2021
    • Modified: Nov. 21, 2024
Showing 20 of 291812 Results