vulnerability
Debian: CVE-2021-29955: firefox-esr -- security update
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 3 | (AV:N/AC:H/Au:N/C:P/I:N/A:N) | Jun 24, 2021 | Jun 28, 2021 | Mar 30, 2026 |
Severity
3
CVSS
(AV:N/AC:H/Au:N/C:P/I:N/A:N)
Published
Jun 24, 2021
Added
Jun 28, 2021
Modified
Mar 30, 2026
Description
A transient execution vulnerability, named Floating Point Value Injection (FPVI) allowed an attacker to leak arbitrary memory addresses and may have also enabled JIT type confusion attacks. (A related vulnerability, Speculative Code Store Bypass (SCSB), did not affect Firefox.). This vulnerability affects Firefox ESR < 78.9 and Firefox < 87.
Solution
debian-upgrade-firefox-esr
Rapid7 Labs
2026 Global Threat Landscape Report
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