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Case File

CVE-2017-7821

CRITICAL · CVSS 9.8 EPSS 1.98%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2018-06-11 · Last synced 2026-08-04

CyberRota Analysis

This is a critical severity vulnerability with a CVSS score of 9.8. It affects Firefox.

CVE
CVE-2017-7821
Severity
CRITICAL
CVSS
9.8
EPSS
1.98%
Firefox

Original NVD Description

A vulnerability where WebExtensions can download and attempt to open a file of some non-executable file types. This can be triggered without specific user interaction for the file download and open actions. This could be used to trigger known vulnerabilities in the programs that handle those document types. This vulnerability affects Firefox < 56.

Related CVEs

Other vulnerabilities affecting the same vendor(s)