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Vulnerabilities of Mozilla Firefox

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CVE Summary Score Published
CVE-2025-11717 When switching between Android apps using the card carousel Firefox shows a black screen as its card image when a… 9.1 Critical Oct 14, 2025
CVE-2025-11719 Starting in Thunderbird 143, the use of the native messaging API by web extensions on Windows could lead to crashes… 9.8 Critical Oct 14, 2025
CVE-2025-11708 Use-after-free in MediaTrackGraphImpl::GetInstance() 9.8 Critical Oct 14, 2025
CVE-2025-11710 A compromised web process using malicious IPC messages could have caused the privileged browser process to reveal blocks… 9.8 Critical Oct 14, 2025
CVE-2025-11709 A compromised web process was able to trigger out of bounds reads and writes in a more privileged process using… 9.8 Critical Oct 14, 2025
CVE-2025-8042 Firefox for Android allowed a sandboxed iframe without the `allow-downloads` attribute to start downloads 9.8 Critical Aug 19, 2025
CVE-2025-9187 Memory safety bugs present in Firefox 141 and Thunderbird 141 9.8 Critical Aug 19, 2025
CVE-2025-9179 An attacker was able to perform memory corruption in the GMP process which processes encrypted media 9.8 Critical Aug 19, 2025
CVE-2025-8044 Memory safety bugs present in Firefox 140 and Thunderbird 140 9.8 Critical Jul 22, 2025
CVE-2025-8043 Focus incorrectly truncated URLs towards the beginning instead of around the origin 9.8 Critical Jul 22, 2025
CVE-2025-8031 The `username:password` part was not correctly stripped from URLs in CSP reports potentially leaking HTTP Basic… 9.8 Critical Jul 22, 2025
CVE-2025-8038 Thunderbird ignored paths when checking the validity of navigations in a frame 9.8 Critical Jul 22, 2025
CVE-2025-8037 Setting a nameless cookie with an equals sign in the value shadowed other cookies 9.1 Critical Jul 22, 2025
CVE-2025-8028 On arm64, a WASM `br_table` instruction with a lot of entries could lead to the label being too far from the instruction… 9.8 Critical Jul 22, 2025
CVE-2025-6433 If a user visited a webpage with an invalid TLS certificate, and granted an exception, the webpage was able to provide a… 9.8 Critical Jun 24, 2025
CVE-2025-6427 An attacker was able to bypass the `connect-src` directive of a Content Security Policy by manipulating subdocuments 9.1 Critical Jun 24, 2025
CVE-2025-6424 A use-after-free in FontFaceSet resulted in a potentially exploitable crash 9.8 Critical Jun 24, 2025
CVE-2025-49710 An integer overflow was present in `OrderedHashTable` used by the JavaScript engine 9.8 Critical Jun 11, 2025
CVE-2025-49709 Certain canvas operations could have lead to memory corruption 9.8 Critical Jun 11, 2025
CVE-2025-4918 An attacker was able to perform an out-of-bounds read or write on a JavaScript `Promise` object 9.8 Critical May 17, 2025
CVE-2025-4083 A process isolation vulnerability in Thunderbird stemmed from improper handling of javascript: URIs, which could allow… 9.1 Critical Apr 29, 2025
CVE-2025-2857 Following the recent Chrome sandbox escape (CVE-2025-2783), various Firefox developers identified a similar pattern in… 10.0 Critical Mar 27, 2025
CVE-2025-1942 When String.toUpperCase() caused a string to get longer it was possible for uninitialized memory to be incorporated into… 9.8 Critical Mar 4, 2025
CVE-2025-1941 Under certain circumstances, a user opt-in setting that Focus should require authentication before use could have been… 9.1 Critical Mar 4, 2025
CVE-2025-1020 Memory safety bugs present in Firefox 134 and Thunderbird 134 9.8 Critical Feb 4, 2025

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