CVE-2020-12422

In non-standard configurations, a JPEG image created by JavaScript could have caused an internal variable to overflow, resulting in an out of bounds write, memory corruption, and a potentially exploitable crash. This vulnerability affects Firefox < 78.

• CWE-787

• http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00027.htmlMailing List, Third Party Advisory
• http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00049.htmlMailing List, Third Party Advisory
• https://bugzilla.mozilla.org/show_bug.cgi?id=1450353Issue Tracking, Vendor Advisory
• https://security.gentoo.org/glsa/202007-10Third Party Advisory
• https://www.mozilla.org/security/advisories/mfsa2020-24/Vendor Advisory
• http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00027.htmlMailing List, Third Party Advisory
• http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00049.htmlMailing List, Third Party Advisory
• https://bugzilla.mozilla.org/show_bug.cgi?id=1450353Issue Tracking, Vendor Advisory
• https://security.gentoo.org/glsa/202007-10Third Party 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.
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• CVE-2020-12421When performing add-on updates, certificate chains terminati…6.5
• CVE-2020-12423When the Windows DLL "webauthn.dll" was missing from the Ope…7.8
• CVE-2020-12424When constructing a permission prompt for WebRTC, a URI was …6.5
• CVE-2020-12425Due to confusion processing a hyphen character in Date.parse…6.5
• CVE-2020-12426Mozilla developers and community members reported memory saf…8.8
• CVE-2020-12427The Western Digital WD Discovery application before 3.8.229 …8.8
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