Published: 24/06/2021 Updated: 02/07/2021

CVSS v2 Base Score: 6.8 | Impact Score: 6.4 | Exploitability Score: 8.6

CVSS v3 Base Score: 8.8 | Impact Score: 5.9 | Exploitability Score: 2.8

VMScore: 605

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

Due to unexpected data type conversions, a use-after-free could have occurred when interacting with the font cache. We presume that with enough effort this could have been exploited to run arbitrary code. This vulnerability affects Firefox < 88.

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mozilla firefox

Mozilla Foundation Security Advisory 2021-16 Security Vulnerabilities fixed in Firefox 88 Announced April 19, 2021 Impact high Products Firefox Fixed in Firefox 88 ...

A security issue has been found in Firefox before version 88 Due to unexpected data type conversions, a use-after-free could have occurred when interacting with the font cache Mozilla presumes that with enough effort this could have been exploited to run arbitrary code ...

CWE-681 https://www.mozilla.org/security/advisories/mfsa2021-16/https://bugzilla.mozilla.org/show_bug.cgi?id=1701942 https://nvd.nist.gov https://www.mozilla.org/en-US/security/advisories/mfsa2021-16/https://security.archlinux.org/CVE-2021-23997

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CVE-2021-23997

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