{"id":"CVE-2021-23985","details":"If an attacker is able to alter specific about:config values (for example malware running on the user's computer), the Devtools remote debugging feature could have been enabled in a way that was unnoticable to the user. This would have allowed a remote attacker (able to make a direct network connection to the victim) to monitor the user's browsing activity and (plaintext) network traffic. This was addressed by providing a visual cue when Devtools has an open network socket. This vulnerability affects Firefox \u003c 87.","modified":"2026-05-04T08:23:53.904785Z","published":"2021-03-31T14:15:19.267Z","withdrawn":"2026-05-04T08:23:53.904785Z","related":["openSUSE-SU-2024:10600-1","openSUSE-SU-2024:14572-1"],"references":[{"type":"ADVISORY","url":"https://www.mozilla.org/security/advisories/mfsa2021-10/"},{"type":"REPORT","url":"https://bugzilla.mozilla.org/show_bug.cgi?id=1659129"}],"affected":[{"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-23985.json","unresolved_ranges":[{"events":[{"introduced":"0"},{"fixed":"87.0"}]}]}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N"}]}