Cybersecurity Alerts

Mozilla Firefox And Thunderbird Use-After-Free Vulnerability

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.

Required Action

Apply updates per vendor instructions.

Weakness Classification

CWE-362

CWE-416

References

• https://nvd.nist.gov/vuln/detail/CVE-2020-6819