CVSS 3.1
5.3 mediumCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:NCVE-2021-29955
Medium (5.3) in mozilla. EPSS 1.5% chance of exploitation in the next 30 days.
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.
Severity
- EPSS
- 1.5% chance of exploitation in the next 30 days; higher than 73% of CVEs (scores of 2026-11-01)
- CWE
- CWE-74
- Published
- Modified
- Record from
- the NVD, synced
Affected
- mozilla:firefox
- mozilla:firefox_esr