Published: 24/06/2021 Updated: 30/06/2021

CVSS v2 Base Score: 2.6 | Impact Score: 2.9 | Exploitability Score: 4.9

CVSS v3 Base Score: 5.3 | Impact Score: 3.6 | Exploitability Score: 1.6

VMScore: 231

Vector: AV:N/AC:H/Au:N/C:P/I:N/A:N

A transient execution vulnerability, named Floating Point Value Injection (FPVI) allowed an malicious user 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.

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mozilla firefox esr

Mozilla Foundation Security Advisory 2021-10 Security Vulnerabilities fixed in Firefox 87 Announced March 23, 2021 Impact high Products Firefox Fixed in Firefox 87 ...

Mozilla Foundation Security Advisory 2021-11 Security Vulnerabilities fixed in Firefox ESR 789 Announced March 23, 2021 Impact high Products Firefox ESR Fixed in Firefox ESR 789 ...

CWE-74 https://www.mozilla.org/security/advisories/mfsa2021-11/https://www.mozilla.org/security/advisories/mfsa2021-10/https://bugzilla.mozilla.org/show_bug.cgi?id=1692972 https://nvd.nist.gov https://www.mozilla.org/en-US/security/advisories/mfsa2021-10/

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CVE-2021-29955

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