VDB
CISA-2026-2792
CISA-2026-2792
PUBLISHED
CVSS 9.8 CRITICAL
Reported by mozilla · Published February 24, 2026
Memory safety bugs present in Firefox ESR 140.7, Thunderbird ESR 140.7, Firefox 147 and Thunderbird 147. 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 affects Firefox < 148, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.
Risk Scores
CVSS 3.1
9.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Mozilla | Firefox | unspecified |
| Mozilla | Firefox ESR | unspecified |
| Mozilla | Thunderbird | unspecified |
| Mozilla | Thunderbird | unspecified |
| Mozilla | Thunderbird | unspecified, unspecified, unspecified |
| Mozilla | Firefox ESR | unspecified, unspecified |
| Mozilla | Firefox | unspecified, * |
Timeline
- Feb 24, 2026 CVE Published
- Feb 26, 2026 CVE Updated