Vulnerability in Mozilla Firefox

CVE-2021-23982

Using techniques that built on the slipstream research, a malicious webpage could have scanned both an internal network's hosts as well as services running on the user's local machine utilizing WebRTC connections. This vulnerability affects Firefox ESR < 78.9, Firefox < 87, and Thunderbird < 78.9.

EPSS: 0.007 (51.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2021-23982?
CVE-2021-23982 is a medium-severity vulnerability in Mozilla Firefox, classified under Inadequate Encryption Strength. CVSS score: 6.5/10. Published 2021-03-31.
How severe is CVE-2021-23982?
Medium severity. CVSS v3 base score is 6.5 out of 10.