CVE-2020-12423

When the Windows DLL "webauthn.dll" was missing from the Operating System, and a malicious one was placed in a folder in the user's %PATH%, Firefox may have loaded the DLL, leading to arbitrary code execution. *Note: This issue only affects the Windows operating system; other operating systems are unaffected.* This vulnerability affects Firefox < 78.

• CWE-427

• http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00027.htmlBroken Link
• http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00049.htmlBroken Link
• https://bugzilla.mozilla.org/show_bug.cgi?id=1642400Issue Tracking, Vendor Advisory
• https://www.mozilla.org/security/advisories/mfsa2020-24/Vendor Advisory
• http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00027.htmlBroken Link
• http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00049.htmlBroken Link
• https://bugzilla.mozilla.org/show_bug.cgi?id=1642400Issue Tracking, Vendor Advisory
• https://www.mozilla.org/security/advisories/mfsa2020-24/Vendor Advisory

Published

Jul 9, 2020

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.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
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