CVE-2019-11704

A flaw in Thunderbird's implementation of iCal causes a heap buffer overflow in icalmemory_strdup_and_dequote when processing certain email messages, resulting in a potentially exploitable crash. This vulnerability affects Thunderbird < 60.7.1.

• CWE-787

• https://bugzilla.mozilla.org/show_bug.cgi?id=1553814Exploit, Issue Tracking, Vendor Advisory
• https://security.gentoo.org/glsa/201908-20Third Party Advisory
• https://www.mozilla.org/security/advisories/mfsa2019-17/Vendor Advisory
• https://bugzilla.mozilla.org/show_bug.cgi?id=1553814Exploit, Issue Tracking, Vendor Advisory
• https://security.gentoo.org/glsa/201908-20Third Party Advisory
• https://www.mozilla.org/security/advisories/mfsa2019-17/Vendor Advisory

Published

Jul 23, 2019

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-2019-11699A malicious page can briefly cause the wrong name to be high…
• CVE-2019-1170An elevation of privilege vulnerability exists when reparse …7.9
• CVE-2019-11700A hyperlink using the res: protocol can be used to open loca…
• CVE-2019-11701The default webcal: protocol handler will load a web site vu…
• CVE-2019-11702A hyperlink using protocols associated with Internet Explore…
• CVE-2019-11703A flaw in Thunderbird's implementation of iCal causes a heap…9.8
• CVE-2019-11705A flaw in Thunderbird's implementation of iCal causes a stac…9.8
• CVE-2019-11706A flaw in Thunderbird's implementation of iCal causes a type…7.5
• CVE-2019-11707A type confusion vulnerability can occur when manipulating J…8.8
• CVE-2019-11708Insufficient vetting of parameters passed with the Prompt:Op…10
• CVE-2019-11709Mozilla developers and community members reported memory saf…9.8
• CVE-2019-1171An information disclosure vulnerability exists in SymCrypt d…5.6