CVE-2025-0247
9.8
CRITICAL · CVSS 3.1 · EPSS 9.3% (pctl 95)
In your normal cycle
Critical by CVSS (9.8), but no sign of active exploitation.
Description
Memory safety bugs present in Firefox 133 and Thunderbird 133. 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 134 and Thunderbird 134.
Scoring
| CVSS | 9.8 (CRITICAL, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| EPSS | 9.27% — more likely to be exploited than 95% of all CVEs |
| Weakness | CWE-787 |
| On CISA KEV | no |
| Public exploit | none known |
| Published | 2025-01-07 |
| Last modified | 2026-10-05 |
Affected (2)
| Vendor | Product |
|---|---|
| mozilla | firefox |
| mozilla | thunderbird |
References
→ the Explorer · watch your stack · NVD