The vulnerability arises from incorrect boundary checks in the Graphics: Text component of Mozilla Firefox. The CVE description does not specify the impact or exploitation mechanism, only noting that the flaw was fixed in Firefox 151.0.3.

All users of Mozilla Firefox on any operating system running a version earlier than 151.0.3 are affected. The issue was fixed in Firefox 151.0.3, so versions 151.0.2 and below remain vulnerable.

With no EPSS score available and not listed in KEV, the likelihood of exploitation remains uncertain. The CVE description does not provide information on severity or exploitation vectors, making risk assessment challenging. No public exploit is documented, so the vulnerability may be low to moderate risk pending further details.