CVE-2021-24002

When a user clicked on an FTP URL containing encoded newline characters (%0A and %0D), the newlines would have been interpreted as such and allowed arbitrary commands to be sent to the FTP server. This vulnerability affects Firefox ESR < 78.10, Thunderbird < 78.10, and Firefox < 88.

• CWE-74

• https://bugzilla.mozilla.org/show_bug.cgi?id=1702374Issue Tracking, Permissions Required, Vendor Advisory
• https://www.mozilla.org/security/advisories/mfsa2021-14/Release Notes, Vendor Advisory
• https://www.mozilla.org/security/advisories/mfsa2021-15/Release Notes, Vendor Advisory
• https://www.mozilla.org/security/advisories/mfsa2021-16/Release Notes, Vendor Advisory
• https://bugzilla.mozilla.org/show_bug.cgi?id=1702374Issue Tracking, Permissions Required, Vendor Advisory
• https://www.mozilla.org/security/advisories/mfsa2021-14/Release Notes, Vendor Advisory
• https://www.mozilla.org/security/advisories/mfsa2021-15/Release Notes, Vendor Advisory
• https://www.mozilla.org/security/advisories/mfsa2021-16/Release Notes, Vendor Advisory

Published

Jun 24, 2021

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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