CVE-2017-5403

When adding a range to an object in the DOM, it is possible to use "addRange" to add the range to an incorrect root object. This triggers a use-after-free, resulting in a potentially exploitable crash. This vulnerability affects Firefox < 52 and Thunderbird < 52.

• CWE-416

• http://www.securityfocus.com/bid/96691Third Party Advisory, VDB Entry
• http://www.securitytracker.com/id/1037966Third Party Advisory, VDB Entry
• https://bugzilla.mozilla.org/show_bug.cgi?id=1340186Issue Tracking, Vendor Advisory
• https://www.mozilla.org/security/advisories/mfsa2017-05/Vendor Advisory
• https://www.mozilla.org/security/advisories/mfsa2017-09/Vendor Advisory
• http://www.securityfocus.com/bid/96691Third Party Advisory, VDB Entry
• http://www.securitytracker.com/id/1037966Third Party Advisory, VDB Entry
• https://bugzilla.mozilla.org/show_bug.cgi?id=1340186Issue Tracking, Vendor Advisory
• https://www.mozilla.org/security/advisories/mfsa2017-05/Vendor Advisory
• https://www.mozilla.org/security/advisories/mfsa2017-09/Vendor Advisory

Published

Jun 11, 2018

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-2017-5397The cache directory on the local file system is set to be wo…
• CVE-2017-5398Memory safety bugs were reported in Thunderbird 45.7. Some o…
• CVE-2017-5399Memory safety bugs were reported in Firefox 51. Some of thes…
• CVE-2017-5400JIT-spray targeting asm.js combined with a heap spray allows…
• CVE-2017-5401A crash triggerable by web content in which an "ErrorResult"…
• CVE-2017-5402A use-after-free can occur when events are fired for a "Font…
• CVE-2017-5404A use-after-free error can occur when manipulating ranges in…
• CVE-2017-5405Certain response codes in FTP connections can result in the …
• CVE-2017-5406A segmentation fault can occur in the Skia graphics library …
• CVE-2017-5407Using SVG filters that don't use the fixed point math implem…
• CVE-2017-5408Video files loaded video captions cross-origin without check…
• CVE-2017-5409The Mozilla Windows updater can be called by a non-privilege…