CVE-2019-17026

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.

  • Published Mar 2, 2020
  • CVSS 8.8 high
  • 46.3% chance of exploitation in the next 30 days (EPSS)
  • In CISA's Known Exploited Vulnerabilities catalog
  • Public exploit code is available
  • A fix is available

Affected software

CVE-2019-17026 at the National Vulnerability Database