VDB
DEBIAN-CVE-2026-4701
DEBIAN-CVE-2026-4701
PUBLISHED
CVSS 9.800000190734863 CRITICAL
Use-after-free in the JavaScript Engine component. This vulnerability was fixed in Firefox 149, Firefox ESR 140.9, Thunderbird 149, and Thunderbird 140.9.
Risk Scores
CVSS v3.1
9.800000190734863
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Debian:11 | thunderbird | 91.0-1, 91.0, 91.0 |
| Debian:12 | firefox-esr | 140.9.0, 140.8.0, 140.8.0 |
| Debian:12 | thunderbird | 115.7.0-1, 1:102.12.0-1, 1:102.12.0-1~deb10u1 |
| Debian:14 | thunderbird | 140.6.0, 1:128.13.0esr-1, 1:128.14.0esr-1 |
| Debian:13 | thunderbird | 0, 140.6.0, 140.6.0 |
| Debian:14 | firefox-esr | 140.3.1, 140.3.1, 140.3.0 |
| Debian:11 | firefox-esr | 115.15.0, 115.15.0, 115.2.0 |
| Debian:13 | firefox-esr | 140.9.0, 140.9.0, 140.8.0 |
Timeline
- Mar 24, 2026 CVE Published
- Apr 28, 2026 CVE Updated