HarborGuard / CVE
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HIGHCVE-2026-8973Published Modified CNA mozilla

CVE-2026-8973: Memory safety bugs fixed in Firefox 151

Memory safety bugs present in Firefox 150. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 151 and Thunderbird 151.

Metrics

CVSS v3.1
8.8
Severity
HIGH
Fixed in
151
Affected Products
2

Fix available

151
Affected packages
  • Mozilla / Firefox
    Fixed in 151
  • Mozilla / Thunderbird
    Fixed in 151
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
References