CVE-2019-9806

HIGH EXPLOITED

Firefox < 66.0 - Denial of Service via FTP Authorization Prompt

Title source: llm
STIX 2.1

Exploitation Summary

CVE-2019-9806 has been observed exploited in the wild (reported by VulnCheck KEV).

Description

A vulnerability exists during authorization prompting for FTP transaction where successive modal prompts are displayed and cannot be immediately dismissed. This allows for a denial of service (DOS) attack. This vulnerability affects Firefox < 66.

References (2)

Core 2
Core References
Issue Tracking, Permissions Required, Vendor Advisory x_refsource_misc
https://bugzilla.mozilla.org/show_bug.cgi?id=1525267

Scores

CVSS v3 7.5
EPSS 0.0034
EPSS Percentile 56.9%
Attack Vector NETWORK
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Details

VulnCheck KEV 2019-02-04
CWE
CWE-399
Status published
Products (1)
mozilla/firefox < 66.0
Published Apr 26, 2019
Tracked Since Feb 18, 2026