CVE-2019-11705

CriticalCVSS 9.8/10Last modified Jun 17, 2026

Description

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

Metrics

CVSS 3.1 9.8/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-787

Affected software

Vendor	Product	Versions
Mozilla	Thunderbird	>= unspecified, < 60.7.1

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1553808Issue Tracking, Permissions Required, 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=1553808Issue Tracking, Permissions Required, Vendor Advisory
https://security.gentoo.org/glsa/201908-20Third Party Advisory
https://www.mozilla.org/security/advisories/mfsa2019-17/Vendor Advisory

Timeline

Published: Jul 23, 2019
Last modified: Jun 17, 2026
NVD status: Modified

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