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.
Published 2021-06-24 14:15:10
Updated 2021-06-30 16:48:12
View at NVD,   CVE.org

Exploit prediction scoring system (EPSS) score for CVE-2021-29955

0.24%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 64 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2021-29955

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
2.6
LOW AV:N/AC:H/Au:N/C:P/I:N/A:N
4.9
2.9
NIST
5.3
MEDIUM CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N
1.6
3.6
NIST

CWE ids for CVE-2021-29955

References for CVE-2021-29955

Products affected by CVE-2021-29955

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