Unrated severityCISA KEVNVD Advisory· Published Mar 2, 2020· Updated Oct 21, 2025
CVE-2019-17026
CVE-2019-17026
Description
Incorrect alias information in IonMonkey JIT compiler for setting array elements could lead to a type confusion. We are aware of targeted attacks in the wild abusing this flaw. This vulnerability affects Firefox ESR < 68.4.1, Thunderbird < 68.4.1, and Firefox < 72.0.1.
Affected products
3- Mozilla/Firefox ESRv5Range: unspecified
- Range: unspecified
- Range: unspecified
Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
6- security.gentoo.org/glsa/202003-02mitrevendor-advisoryx_refsource_GENTOO
- usn.ubuntu.com/4335-1/mitrevendor-advisoryx_refsource_UBUNTU
- packetstormsecurity.com/files/162568/Firefox-72-IonMonkey-JIT-Type-Confusion.htmlmitrex_refsource_MISC
- bugzilla.mozilla.org/show_bug.cgimitrex_refsource_MISC
- www.mozilla.org/security/advisories/mfsa2020-03/mitrex_refsource_MISC
- www.mozilla.org/security/advisories/mfsa2020-04/mitrex_refsource_MISC
News mentions
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