Vulnerability in Microsoft Windows

CVE-2020-26966

Searching for a single word from the address bar caused an mDNS request to be sent on the local network searching for a hostname consisting of that string; resulting in an information leak. *Note: This issue only affected Windows operating systems. Other operating systems are unaffected.*. This vulnerability affects Firefox < 83, Firefox ESR < 78.5, and Thunderbird < 78.5.

EPSS: 0.013 (68.3th 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:H/I:N/A:N.

Affected products

References

Frequently asked questions

What is CVE-2020-26966?
CVE-2020-26966 is a medium-severity vulnerability in Microsoft Windows. CVSS score: 6.5/10. Published 2020-12-09.
How severe is CVE-2020-26966?
Medium severity. CVSS v3 base score is 6.5 out of 10.