Out-of-bounds Read in Microsoft Windows
CVE-2021-29968
When drawing text onto a canvas with WebRender disabled, an out of bounds read could occur. *This bug only affects Firefox on Windows. Other operating systems are unaffected.*. This vulnerability affects Firefox < 89.0.1.
Vulnerability class: Buffer Overflow
EPSS: 0.008 (53.7th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H.
Affected products
- Microsoft Windows
- Mozilla Firefox — versions unspecified
Weakness classification (CWE)
References
- security@mozilla.org (x_refsource_MISC, Release Notes, Vendor Advisory)
- security@mozilla.org (Permissions Required, x_refsource_MISC, Issue Tracking, Vendor Advisory)
Frequently asked questions
- What is CVE-2021-29968?
- CVE-2021-29968 is a high-severity vulnerability in Microsoft Windows, classified under Out-of-bounds Read. CVSS score: 8.1/10. Published 2021-06-24.
- How severe is CVE-2021-29968?
- High severity. CVSS v3 base score is 8.1 out of 10.