CVE-2021-29955

EPSS 1.5%

Vexday Risk Score

3Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS —EPSS 1.5%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

24 Jun 2021Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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.

Affected products

Mozilla · Firefox Mozilla · Firefox ESR

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References

https://bugzilla.mozilla.org/show_bug.cgi?id=1692972 https://www.mozilla.org/security/advisories/mfsa2021-10/https://www.mozilla.org/security/advisories/mfsa2021-11/