CVE-2020-6819 — Actively Exploited: Firefox and Thunderbird (Mozilla)
Mozilla Firefox and Thunderbird contain a race condition vulnerability when running the nsDocShell destructor under certain conditions. The race condition creates a use-after-free vulnerability, causing unspecified impacts.
| CVE ID | CVE-2020-6819 |
|---|---|
| Vendor | Mozilla |
| Product | Firefox and Thunderbird |
| Vulnerability name | Mozilla Firefox And Thunderbird Use-After-Free Vulnerability |
| Date added | 2021-11-03 |
| Remediation due | 2022-05-03 |
| Known ransomware use | Unknown |
| Required action | Apply updates per vendor instructions. |
| Description | Mozilla Firefox and Thunderbird contain a race condition vulnerability when running the nsDocShell destructor under certain conditions. The race condition creates a use-after-free vulnerability, causing unspecified impacts. |
| Source | CISA Known Exploited Vulnerabilities |
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