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Case File

CVE-2017-7761

MEDIUM · CVSS 5.5 EPSS 0.31%

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

CyberRota Analysis

This is a medium severity vulnerability with a CVSS score of 5.5. It affects Windows, Firefox.

CVE
CVE-2017-7761
Severity
MEDIUM
CVSS
5.5
EPSS
0.31%
Windows Firefox

Original NVD Description

The Mozilla Maintenance Service "helper.exe" application creates a temporary directory writable by non-privileged users. When this is combined with creation of a junction (a form of symbolic link), protected files in the target directory of the junction can be deleted by the Mozilla Maintenance Service, which has privileged access. Note: This attack requires local system access and only affects Windows. Other operating systems are not affected. This vulnerability affects Firefox ESR < 52.2 and Firefox < 54.

Related CVEs

Other vulnerabilities affecting the same vendor(s)