CVE-2020-15678

When recursing through graphical layers while scrolling, an iterator may have become invalid, resulting in a potential use-after-free. This occurs because the function APZCTreeManager::ComputeClippedCompositionBounds did not follow iterator invalidation rules. This vulnerability affects Firefox < 81, Thunderbird < 78.3, and Firefox ESR < 78.3.

• CWE-416

• http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00074.htmlBroken Link, Mailing List, Third Party Advisory
• http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00077.htmlBroken Link, Mailing List, Third Party Advisory
• https://bugzilla.mozilla.org/show_bug.cgi?id=1660211Issue Tracking, Permissions Required, Vendor Advisory
• https://lists.debian.org/debian-lts-announce/2020/10/msg00020.htmlMailing List, Third Party Advisory
• https://security.gentoo.org/glsa/202010-02Third Party Advisory
• https://www.debian.org/security/2020/dsa-4770Third Party Advisory
• https://www.mozilla.org/security/advisories/mfsa2020-42/Release Notes, Vendor Advisory
• https://www.mozilla.org/security/advisories/mfsa2020-43/Release Notes, Vendor Advisory
• https://www.mozilla.org/security/advisories/mfsa2020-44/Release Notes, Vendor Advisory
• http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00074.htmlBroken Link, Mailing List, Third Party Advisory
• http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00077.htmlBroken Link, Mailing List, Third Party Advisory
• https://bugzilla.mozilla.org/show_bug.cgi?id=1660211Issue Tracking, Permissions Required, Vendor Advisory
• https://lists.debian.org/debian-lts-announce/2020/10/msg00020.htmlMailing List, Third Party Advisory
• https://security.gentoo.org/glsa/202010-02Third Party Advisory
• https://www.debian.org/security/2020/dsa-4770Third Party Advisory
• https://www.mozilla.org/security/advisories/mfsa2020-42/Release Notes, Vendor Advisory
• https://www.mozilla.org/security/advisories/mfsa2020-43/Release Notes, Vendor Advisory
• https://www.mozilla.org/security/advisories/mfsa2020-44/Release Notes, Vendor Advisory

Published

Oct 1, 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.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2020-15671When typing in a password under certain conditions, a race m…3.1
• CVE-2020-15673Mozilla developers reported memory safety bugs present in Fi…8.8
• CVE-2020-15674Mozilla developers reported memory safety bugs present in Fi…8.8
• CVE-2020-15675When processing surfaces, the lifetime may outlive a persist…8.8
• CVE-2020-15676Firefox sometimes ran the onload handler for SVG elements th…6.1
• CVE-2020-15677By exploiting an Open Redirect vulnerability on a website, a…6.1
• CVE-2020-15679An OAuth session fixation vulnerability existed in the VPN l…7.6
• CVE-2020-1568A remote code execution vulnerability exists when Microsoft …7.5
• CVE-2020-15680If a valid external protocol handler was referenced in an im…5.3
• CVE-2020-15681When multiple WASM threads had a reference to a module, and …7.5
• CVE-2020-15682When a link to an external protocol was clicked, a prompt wa…6.5
• CVE-2020-15683Mozilla developers and community members reported memory saf…9.8