CVE-2021-29965

MediumCVSS 5.3/10Last modified Jun 17, 2026

Description

A malicious website that causes an HTTP Authentication dialog to be spawned could trick the built-in password manager to suggest passwords for the currently active website instead of the website that triggered the dialog. *This bug only affects Firefox for Android. Other operating systems are unaffected.*. This vulnerability affects Firefox < 89.

Metrics

CVSS 3.1 5.3/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Weakness enumeration

CWE-610

Affected software

Vendor	Product	Versions
Mozilla	Firefox	>= unspecified, < 89

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1709257Permissions Required, Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2021-23/Release Notes, Vendor Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1709257Permissions Required, Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2021-23/Release Notes, Vendor Advisory

Timeline

Published: Jun 24, 2021
Last modified: Jun 17, 2026
NVD status: Modified

Related CVEs from 2021

CVE-2021-299668.8Mozilla developers reported memory safety bugs present in Firefox 88. Some of these bugs showed evidence of memory corruption and we presume CVE-2021-299678.8Mozilla developers reported memory safety bugs present in Firefox 88 and Firefox ESR 78.11. Some of these bugs showed evidence of memory cor CVE-2021-299688.1When drawing text onto a canvas with WebRender disabled, an out of bounds read could occur. *This bug only affects Firefox on Windows. Other CVE-2021-299695.9If Thunderbird was configured to use STARTTLS for an IMAP connection, and an attacker injected IMAP server responses prior to the completion CVE-2021-299708.8A malicious webpage could have triggered a use-after-free, memory corruption, and a potentially exploitable crash. *This bug could only be t CVE-2021-299719.8If a user had granted a permission to a webpage and saved that grant, any webpage running on the same host - irrespective of scheme or port CVE-2021-299728.8A use-after-free vulnerability was found via testing, and traced to an out-of-date Cairo library. Updating the library resolved the issue, a CVE-2021-299738.8Password autofill was enabled without user interaction on insecure websites on Firefox for Android. This was corrected to require user inter CVE-2021-299744.3When network partitioning was enabled, e.g. as a result of Enhanced Tracking Protection settings, a TLS error page would allow the user to o CVE-2021-299756.5Through a series of DOM manipulations, a message, over which the attacker had control of the text but not HTML or formatting, could be overl CVE-2021-299768.8Mozilla developers reported memory safety bugs present in code shared between Firefox and Thunderbird. Some of these bugs showed evidence of CVE-2021-299778.8Mozilla developers reported memory safety bugs present in Firefox 89. Some of these bugs showed evidence of memory corruption and we presume