Back to search
CVE-2020-6819
Published: Apr 24, 2020
Modified: Oct 21, 2025
PUBLISHED
Description
Under certain conditions, when running the nsDocShell destructor, a race condition can cause a use-after-free. We are aware of targeted attacks in the wild abusing this flaw. This vulnerability affects Thunderbird < 68.7.0, Firefox < 74.0.1, and Firefox ESR < 68.6.1.
| Vendor | Product | Versions |
|---|---|---|
Mozilla | Thunderbird | affected unspecified - < 68.7.0 |
Mozilla | Firefox | affected unspecified - < 74.0.1 |
Mozilla | Firefox ESR | affected unspecified - < 68.6.1 |
References
https://www.mozilla.org/security/advisories/mfsa2020-14/
x_refsource_MISC
https://www.mozilla.org/security/advisories/mfsa2020-11/
x_refsource_MISC
https://bugzilla.mozilla.org/show_bug.cgi?id=1620818
x_refsource_MISC
USN-4335-1
vendor-advisory
x_refsource_UBUNTU
Security Training
Train your team to recognize and prevent security threats with our comprehensive security awareness program.
Start TrainingVulnerability Scanning
Discover vulnerabilities in your applications and infrastructure before attackers do.
Scan Now