Vulnerability · Published Jun 24, 2021 · Assigned by mozilla

CVE-2021-29968

High 8.1

In plain English

A high-severity security flaw in Firefox from Mozilla. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.8% (higher than 58% of all known vulnerabilities).

Severity (CVSS NVD)8.1High

Exploit odds (30 days)0.8%top 42.4% of all CVEs

Exploited in the wildNo reportsnot in CISA KEV

Attack toolingNoneno public tooling known

Official description

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.

Affected products (as reported)

Vendor	Product	Versions
Mozilla	Firefox	unspecified – before 89.0.1

References

https://www.mozilla.org/security/advisories/mfsa2021-27/ x_refsource_MISC
https://bugzilla.mozilla.org/show_bug.cgi?id=1712047 x_refsource_MISC