Exploited Vulnerabilities DailyCVE-2020-6819: Mozilla Firefox and Thunderbird
EPSS3.0%No. 1518 of 1739 in KEV
CVE year2020~1 yrs before listing
Same vendor in KEV13
Same product6
| Field | Value |
|---|---|
| Vendor | Mozilla |
| Product | Firefox and Thunderbird |
| Name | Mozilla Firefox And Thunderbird Use-After-Free Vulnerability |
| Added to KEV | 2021-11-03 |
| US federal due date | 2022-05-03 |
| Ransomware use | Unknown |
| CWE | CWE-362, CWE-416 |
CISA 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.
Other entries for this product
| CVE | Vendor / product | Added | EPSS | Ransomware |
|---|---|---|---|---|
| CVE-2019-11708 | Mozilla Firefox and Thunderbird | 2022-05-23 | 55.8% | Unknown |
| CVE-2019-11707 | Mozilla Firefox and Thunderbird | 2022-05-23 | 37.6% | Unknown |
| CVE-2013-1690 | Mozilla Firefox and Thunderbird | 2022-03-28 | 69.0% | Unknown |
| CVE-2020-6820 | Mozilla Firefox and Thunderbird | 2021-11-03 | 7.0% | Unknown |
| CVE-2019-17026 | Mozilla Firefox and Thunderbird | 2021-11-03 | 46.3% | Unknown |
Data from CISA's Known Exploited Vulnerabilities (KEV) catalog. EPSS is FIRST's estimated probability of exploitation activity in the next 30 days, refreshed weekly. Always follow the vendor's official guidance.
About this page
A Mozilla Firefox and Thunderbird vulnerability added to CISA's Known Exploited Vulnerabilities catalog on 2021-11-03.