An attacker could have written a value to the first element in a zero-length JavaScript array. Although the array was zero-length, the value was not written to an invalid memory address. This vulnerability affects Firefox < 104.

Mozilla Firefox 1.0.4 and 1.0.5 does not choose the challenge with the strongest authentication scheme available as required by RFC2617, which might cause credentials to be sent in plaintext even if an encrypted channel is available.

The JavaScript engine in Mozilla Firefox 3.6.x before 3.6.4 allow remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via vectors that trigger an assertion failure in jstracer.cpp.

When processing a redirect with a conflicting Referrer-Policy, Firefox would have adopted the redirect's Referrer-Policy. This would have potentially resulted in more information than intended by the original origin being provided to the destination of the redirect. This vulnerability affects Firefox < 86.

Mozilla Firefox before 3.0.12 does not properly handle an SVG element that has a property with a watch function and an __defineSetter__ function, which allows remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via a crafted document, related to a certain pointer misinterpretation.

Files with the .JNLP extension used for "Java web start" applications are not treated as executable content for download prompts even though they can be executed if Java is installed on the local system. This could allow users to mistakenly launch an executable binary locally. This vulnerability affects Firefox < 67.

On Windows systems, the logger run by the Windows updater deletes the file "update.log" before it runs in order to write a new log of that name. The path to this file is supplied at the command line to the updater and could be used in concert with another local exploit to delete a different file named "update.log" instead of the one intended. Note: This attack only affects Windows operating systems. Other operating systems are not affected. This vulnerability affects Firefox < 55.

Mozilla Firefox 3 before 3.0.1 on Mac OS X allows remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via a crafted GIF file that triggers a free of an uninitialized pointer.

The nsDocument::MaybePreLoadImage function in content/base/src/nsDocument.cpp in the image-preloading implementation in Mozilla Firefox 3.6 before 3.6.2 does not apply scheme restrictions and policy restrictions to the image's URL, which might allow remote attackers to cause a denial of service (application crash or hang) or hijack the functionality of the browser's add-ons via a crafted SRC attribute of an IMG element, as demonstrated by remote command execution through an ssh: URL in a configuration that supports gnome-vfs with a nonstandard network.gnomevfs.supported-protocols setting.

A logic flaw in our location bar implementation could have allowed a local attacker to spoof the current location by selecting a different origin and removing focus from the input element. This vulnerability affects Firefox < 76.

The FT2FontEntry::CreateFontEntry function in FreeType, as used in the Android build of Mozilla Firefox before 16.0.1 on CyanogenMod 10, allows remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via unspecified vectors.

Integer overflow in libstagefright in Mozilla Firefox before 38.0 allows remote attackers to execute arbitrary code or cause a denial of service (heap-based buffer overflow and out-of-bounds read) via an MP4 video file containing invalid metadata.

A hyperlink using the res: protocol can be used to open local files at a known location in Internet Explorer if a user approves execution when prompted. *Note: this issue only occurs on Windows. Other operating systems are unaffected.*. This vulnerability affects Firefox < 67.

Web application manifests were stored by using an insecure MD5 hash which allowed for a hash collision to overwrite another application's manifest. This could have been exploited to run arbitrary code in another application's context. *This issue only affects Firefox for Android. Other versions of Firefox are unaffected.* This vulnerability affects Firefox < 126.

Mozilla Firefox before 36.0 does not properly recognize the equivalence of domain names with and without a trailing . (dot) character, which allows man-in-the-middle attackers to bypass the HPKP and HSTS protection mechanisms by constructing a URL with this character and leveraging access to an X.509 certificate for a domain with this character.

Mozilla Firefox before 42.0, when NTLM v1 is enabled for HTTP authentication, allows remote attackers to obtain sensitive hostname information by constructing a crafted web site that sends an NTLM request and reads the Workstation field of an NTLM type 3 message.

The nsTransformedTextRun::SetCapitalization function in Mozilla Firefox before 36.0 allows remote attackers to execute arbitrary code or cause a denial of service (out-of-bounds read of heap memory) via a crafted Cascading Style Sheets (CSS) token sequence that triggers a restyle or reflow operation.

EMC RSA Key Manager (RKM) Appliance 2.7 SP1 before 2.7.1.6, when Firefox 4.x or 5.0 is used, does not properly terminate a user session upon a logout action, which makes it easier for remote attackers to execute arbitrary code by leveraging an unattended workstation.

An ambiguous file picker design could have confused users who intended to select and upload a single file into uploading a whole directory. This was addressed by adding a new prompt. This vulnerability affects Firefox < 85.

Multiple unspecified vulnerabilities in the browser engine in Mozilla Firefox before 21.0 allow remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via unknown vectors.