CVE-2021-29958

When a download was initiated, the client did not check whether it was in normal or private browsing mode, which led to private mode cookies being shared in normal browsing mode. This vulnerability affects Firefox for iOS < 34.

• CWE-862

• https://bugzilla.mozilla.org/show_bug.cgi?id=1670127Permissions Required, Vendor Advisory
• https://www.mozilla.org/security/advisories/mfsa2021-25/Release Notes, Vendor Advisory
• https://bugzilla.mozilla.org/show_bug.cgi?id=1670127Permissions Required, Vendor Advisory
• https://www.mozilla.org/security/advisories/mfsa2021-25/Release Notes, Vendor Advisory

Published

Jun 24, 2021

Last Modified

Jun 17, 2026

Status

Modified

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• CVE-2021-29952When Web Render components were destructed, a race condition…7.5
• CVE-2021-29953A malicious webpage could have forced a Firefox for Android …6.1
• CVE-2021-29954Proxy functionality built into Hubs Cloud’s Reticulum softwa…9.8
• CVE-2021-29955A transient execution vulnerability, named Floating Point Va…5.3
• CVE-2021-29956OpenPGP secret keys that were imported using Thunderbird ver…4.3
• CVE-2021-29957If a MIME encoded email contains an OpenPGP inline signed or…4.3
• CVE-2021-29959When a user has already allowed a website to access micropho…4.3
• CVE-2021-29960Firefox used to cache the last filename used for printing a …4.3
• CVE-2021-29961When styling and rendering an oversized `<select>` element, …4.3
• CVE-2021-29962Firefox for Android would become unstable and hard-to-recove…4.3
• CVE-2021-29963Address bar search suggestions in private browsing mode were…4.3
• CVE-2021-29964A locally-installed hostile program could send `WM_COPYDATA`…7.1