CVE-2017-5434

CriticalCVSS 9.8/10Last modified Jun 17, 2026

Description

A use-after-free vulnerability occurs when redirecting focus handling which results in a potentially exploitable crash. This vulnerability affects Thunderbird < 52.1, Firefox ESR < 45.9, Firefox ESR < 52.1, and Firefox < 53.

Metrics

CVSS 3.0 9.8/10CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-416

Affected software

Vendor	Product	Versions
Mozilla	Thunderbird	>= unspecified, < 52.1
Mozilla	Firefox ESR	>= unspecified, < 45.9; >= unspecified, < 52.1
Mozilla	Firefox	>= unspecified, < 53

References

http://www.securityfocus.com/bid/97940Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1038320Third Party Advisory, VDB Entry
https://access.redhat.com/errata/RHSA-2017:1104Third Party Advisory
https://access.redhat.com/errata/RHSA-2017:1106Third Party Advisory
https://access.redhat.com/errata/RHSA-2017:1201Third Party Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1349946Exploit, Issue Tracking
https://www.debian.org/security/2017/dsa-3831Third Party Advisory
https://www.mozilla.org/security/advisories/mfsa2017-10/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2017-11/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2017-12/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2017-13/Vendor Advisory
http://www.securityfocus.com/bid/97940Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1038320Third Party Advisory, VDB Entry
https://access.redhat.com/errata/RHSA-2017:1104Third Party Advisory
https://access.redhat.com/errata/RHSA-2017:1106Third Party Advisory
https://access.redhat.com/errata/RHSA-2017:1201Third Party Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1349946Exploit, Issue Tracking
https://www.debian.org/security/2017/dsa-3831Third Party Advisory
https://www.mozilla.org/security/advisories/mfsa2017-10/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2017-11/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2017-12/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2017-13/Vendor Advisory

Timeline

Published: Jun 11, 2018
Last modified: Jun 17, 2026
NVD status: Modified

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