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Case File

CVE-2021-29987

MEDIUM · CVSS 6.5 EPSS 0.95%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-08-17 · Last synced 2026-08-04

CyberRota Analysis

This is a medium severity vulnerability with a CVSS score of 6.5. It affects Linux, Firefox.

CVE
CVE-2021-29987
Severity
MEDIUM
CVSS
6.5
EPSS
0.95%
Linux Firefox

Original NVD Description

After requesting multiple permissions, and closing the first permission panel, subsequent permission panels will be displayed in a different position but still record a click in the default location, making it possible to trick a user into accepting a permission they did not want to. *This bug only affects Firefox on Linux. Other operating systems are unaffected.*. This vulnerability affects Firefox < 91 and Thunderbird < 91.

Related CVEs

Other vulnerabilities affecting the same vendor(s)