CVSS 3.1
6.5 mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:NCVE-2020-26966
Medium (6.5) in mozilla. EPSS 1.4% chance of exploitation in the next 30 days.
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.
Severity
- EPSS
- 1.4% chance of exploitation in the next 30 days; higher than 71% of CVEs (scores of 2026-11-01)
- Published
- Modified
- Record from
- the NVD, synced
Affected
- mozilla:firefox
- mozilla:firefox_esr
- mozilla:thunderbird