vulnerability
MFSA2021-11 Firefox: Security Vulnerabilities fixed in Firefox ESR 78.9 (CVE-2021-23982)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 4 | (AV:N/AC:M/Au:N/C:N/I:P/A:N) | Mar 23, 2021 | Mar 24, 2021 | Feb 10, 2026 |
Severity
4
CVSS
(AV:N/AC:M/Au:N/C:N/I:P/A:N)
Published
Mar 23, 2021
Added
Mar 24, 2021
Modified
Feb 10, 2026
Description
Using techniques that built on the slipstream research, a malicious webpage could have scanned both an internal network's hosts as well as services running on the user's local machine utilizing WebRTC connections. This vulnerability affects Firefox ESR < 78.9, Firefox < 87, and Thunderbird < 78.9.
Solution
mozilla-firefox-esr-upgrade-78_9
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