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OpenAdvisories
High WID-SEC-2025-0482 19 CVEs

Mozilla Firefox, Mozilla Firefox ESR und Mozilla Thunderbird: Mehrere Schwachstellen

Published Mar 4, 2025 · Updated Feb 2, 2026 · Revision 15 · de-DE

Vendor: amazon Vendor: Debian Vendor: Fedora Vendor: gentoo Vendor: IGEL Vendor: Mozilla Vendor: Oracle Vendor: Red Hat Vendor: SUSE Vendor: Ubuntu Vendor: Xerox Product: Enterprise Linux Product: Firefox Product: Firefox ESR Product: FreeFlow Print Server Product: Linux Product: Linux Product: Linux Product: Linux Product: Linux Product: Linux Product: Linux 2 Product: openSUSE Product: OS Product: Thunderbird Platform: macOS Platform: Windows

Summary

Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Mozilla Firefox, Mozilla Firefox ESR und Mozilla Thunderbird ausnutzen, um Spoofing-Angriffe durchzuführen, Sicherheitsmaßnahmen zu umgehen, erhöhte Privilegien zu erlangen, einen Denial-of-Service-Zustand herbeizuführen, vertrauliche Informationen offenzulegen, Daten zu manipulieren, beliebigen Code auszuführen oder nicht spezifizierte Auswirkungen zu verursachen.

Product

Firefox ist ein Open Source Web Browser.
ESR ist die Variante mit verlängertem Support.
Thunderbird ist ein Open Source E-Mail Client.

Vulnerabilities 19

  • Critical 9.8
    CVE-2025-1942

    Disclosure of uninitialized memory when .toUpperCase() causes string to get longer

    When String.toUpperCase() caused a string to get longer it was possible for uninitialized memory to be incorporated into the result string. This vulnerability was fixed in Firefox 136 and Thunderbird 136.

    Mozilla Firefox Thunderbird thunderbird Browsers Ubuntu Wolfi
  • Critical 9.1
    CVE-2025-1941

    Lock screen setting bypass in Firefox Focus for Android

    Under certain circumstances, a user opt-in setting that Focus should require authentication before use could have been be bypassed (distinct from CVE-2025-0245). This vulnerability was fixed in Firefox 136.

    Mozilla Firefox Browsers
  • High 8.8
    CVE-2025-1930

    AudioIPC StreamData could trigger a use-after-free in the Browser process

    On Windows, a compromised content process could use bad StreamData sent over AudioIPC to trigger a use-after-free in the Browser process. This could have led to a sandbox escape. This vulnerability was fixed in Firefox 136, Firefox ESR 115.21, Firefox ESR 128…

    Mozilla Firefox Thunderbird thunderbird Browsers Ubuntu Wolfi
  • High 8.2
    CVE-2025-1943

    Memory safety bugs fixed in Firefox 136 and Thunderbird 136

    Memory safety bugs present in Firefox 135 and Thunderbird 135. 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 was fixed in Firefo…

    Mozilla Firefox Thunderbird thunderbird Browsers Ubuntu Wolfi
  • High 8.1
    CVE-2025-1932

    Inconsistent comparator in XSLT sorting led to out-of-bounds access

    An inconsistent comparator in xslt/txNodeSorter could have resulted in potentially exploitable out-of-bounds access. Only affected version 122 and later. This vulnerability was fixed in Firefox 136, Firefox ESR 128.8, Thunderbird 136, and Thunderbird 128.8.

    Mozilla Firefox Thunderbird thunderbird Browsers Debian Ubuntu Wolfi
  • High 7.6
    CVE-2025-1933

    JIT corruption of WASM i32 return values on 64-bit CPUs

    On 64-bit CPUs, when the JIT compiles WASM i32 return values they can pick up bits from left over memory. This can potentially cause them to be treated as a different type. This vulnerability was fixed in Firefox 136, Firefox ESR 115.21, Firefox ESR 128.8, Th…

    Mozilla Firefox Thunderbird thunderbird Browsers Debian Ubuntu Wolfi
  • High 7.5
    CVE-2025-1931

    Use-after-free in WebTransportChild

    It was possible to cause a use-after-free in the content process side of a WebTransport connection, leading to a potentially exploitable crash. This vulnerability was fixed in Firefox 136, Firefox ESR 115.21, Firefox ESR 128.8, Thunderbird 136, and Thunderbir…

    Mozilla Firefox Thunderbird thunderbird Browsers Debian Ubuntu Wolfi
  • High 7.5
    CVE-2025-1937

    Memory safety bugs fixed in Firefox 136, Thunderbird 136, Firefox ESR 115.21, Firefox ESR 128.8, and Thunderbird 128.8

    Memory safety bugs present in Firefox 135, Thunderbird 135, Firefox ESR 115.20, Firefox ESR 128.7, and Thunderbird 128.7. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to…

    Mozilla Firefox Thunderbird thunderbird Browsers Debian Ubuntu Wolfi
  • High 7.3
    CVE-2025-1936

    Adding %00 and a fake extension to a jar: URL changed the interpretation of the contents

    jar: URLs retrieve local file content packaged in a ZIP archive. The null and everything after it was ignored when retrieving the content from the archive, but the fake extension after the null was used to determine the type of content. This could have been u…

    Mozilla Firefox Thunderbird thunderbird Browsers Debian Ubuntu Wolfi
  • High 7.1
    CVE-2025-1940

    Android Intent confirmation prompt tapjacking using Select options

    A select option could partially obscure the confirmation prompt shown before launching external apps. This could be used to trick a user in to launching an external app unexpectedly. *This issue only affects Android versions of Firefox.*. This vulnerability w…

    Mozilla Firefox firefox Browsers Wolfi
  • High 7.0
    CVE-2025-26696

    Crafted email message incorrectly shown as being encrypted

    Certain crafted MIME email messages that claimed to contain an encrypted OpenPGP message, which instead contained an OpenPGP signed message, were wrongly shown as being encrypted. This vulnerability was fixed in Thunderbird 136 and Thunderbird 128.8.

    Mozilla Thunderbird thunderbird thunderbird Debian Ubuntu
  • Medium 6.5
    CVE-2025-1934

    Unexpected GC during RegExp bailout processing

    It was possible to interrupt the processing of a RegExp bailout and run additional JavaScript, potentially triggering garbage collection when the engine was not expecting it. This vulnerability was fixed in Firefox 136, Firefox ESR 128.8, Thunderbird 136, and…

    Mozilla Firefox Thunderbird thunderbird Browsers Debian Ubuntu Wolfi
  • Medium 6.5
    CVE-2025-1938

    Memory safety bugs fixed in Firefox 136, Thunderbird 136, Firefox ESR 128.8, and Thunderbird 128.8

    Memory safety bugs present in Firefox 135, Thunderbird 135, Firefox ESR 128.7, and Thunderbird 128.7. 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.…

    Mozilla Firefox Thunderbird thunderbird Browsers Debian Ubuntu Wolfi
  • Medium 5.4
    CVE-2025-27426

    Firefox Mobile iOS Full Address Bar Spoof Using Server-Side Redirect to internal error page

    Malicious websites utilizing a server-side redirect to an internal error page could result in a spoofed website URL. This vulnerability was fixed in Firefox for iOS 136.

    Mozilla Firefox for iOS firefox iOS Browsers Wolfi
  • Medium 5.3
    CVE-2025-26695

    Downloading of OpenPGP keys from WKD used incorrect padding

    When requesting an OpenPGP key from a WKD server, an incorrect padding size was used and a network observer could have learned the length of the requested email address. This vulnerability was fixed in Thunderbird 136 and Thunderbird 128.8.

    Mozilla Thunderbird thunderbird thunderbird Debian Ubuntu
  • Medium 4.3
    CVE-2025-1935

    Clickjacking the registerProtocolHandler info-bar

    A web page could trick a user into setting that site as the default handler for a custom URL protocol. This vulnerability was fixed in Firefox 136, Firefox ESR 128.8, Thunderbird 136, and Thunderbird 128.8.

    Mozilla Firefox Thunderbird thunderbird Browsers Debian Ubuntu Wolfi
  • Medium 4.3
    CVE-2025-27424

    Firefox Mobile iOS Address Bar Spoof Using Server-Side Redirect to non-http Scheme

    Websites redirecting to a non-HTTP scheme URL could allow a website address to be spoofed for a malicious page. This vulnerability was fixed in Firefox for iOS 136.

    Mozilla Firefox for iOS firefox iOS Browsers Wolfi
  • Medium 4.3
    CVE-2025-27425

    QR code user confirmation bypass with invalid protocol

    Scanning certain QR codes that included text with a website URL could allow the URL to be opened without presenting the user with a confirmation alert first. This vulnerability was fixed in Firefox for iOS 136.

    Mozilla Firefox for iOS firefox iOS Browsers Wolfi
  • Low 3.9
    CVE-2025-1939

    Tapjacking in Android Custom Tabs using transition animations

    Android apps can load web pages using the Custom Tabs feature. This feature supports a transition animation that could have been used to trick a user into granting sensitive permissions by hiding what the user was actually clicking. This vulnerability was fix…

    Mozilla Firefox firefox Browsers Wolfi

Revision history

  1. #15

    Neue Updates von Ubuntu aufgenommen

  2. #14

    Neue Updates von XEROX aufgenommen

  3. #13

    Neue Updates von Gentoo aufgenommen

  4. #12

    Neue Updates von Gentoo aufgenommen

  5. #11

    Neue Updates aufgenommen

  6. #10

    Neue Updates von Amazon aufgenommen

  7. #9

    Neue Updates von Red Hat aufgenommen

  8. #8

    Neue Updates von Red Hat und Oracle Linux aufgenommen

  9. #7

    Neue Updates von Red Hat aufgenommen

  10. #6

    Neue Updates von Red Hat und SUSE aufgenommen

  11. #5

    CVE's ergänzt

  12. #4

    Neue Updates von Debian und openSUSE aufgenommen

  13. #3

    Neue Updates von Ubuntu, Red Hat und Oracle Linux aufgenommen

  14. #2

    Neue Updates von Red Hat, openSUSE, SUSE und Debian aufgenommen

  15. #1

    Initiale Fassung

References