CVE-2019-17026 · netVigilance record NV21-0069

Mozilla Firefox And Thunderbird Type Confusion

past due

What to do

Apply updates per vendor instructions.

CISA deadline 2022-05-03 · passed 4 years 4 months ago · applies to US federal civilian agencies; used elsewhere as a reference SLA

What happened

Mozilla Firefox and Thunderbird contain a type confusion vulnerability due to incorrect alias information in the IonMonkey JIT compiler when setting array elements.

Who is affected

Mozilla Firefox and Thunderbird. Affected version ranges are listed in the vendor advisory and the NVD entry linked under Sources.

Weakness class: CWE-843.

Timeline

2021-11-03
Added to CISA KEVExploitation in the wild confirmed by CISA
2022-05-03
CISA remediation deadlinepassed 4 years 4 months ago

Sources

NVD entry for CVE-2019-17026 nvd.nist.gov/vuln/detail/CVE-2019-17026
CISA Known Exploited Vulnerabilities catalog www.cisa.gov/known-exploited-vulnerabilities-catalog
nvd.nist.gov nvd.nist.gov/vuln/detail/CVE-2019-17026