VDB
DEBIAN-CVE-2026-2765
DEBIAN-CVE-2026-2765
PUBLISHED
CVSS 9.800000190734863 CRITICAL
Use-after-free in the JavaScript Engine component. This vulnerability was fixed in Firefox 148, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 140.8.
Risk Scores
CVSS 3.1
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:14 | firefox-esr | 140.5.0, 140.4.0, 140.4.0 |
| Debian:12 | firefox-esr | 115.9.0, 115.9.0, 115.8.0 |
| Debian:12 | thunderbird | *, 0, 1:102.11.0-1 |
| Debian:14 | thunderbird | 1:128.14.0esr-1, 140.4.0, 140.4.0 |
| Debian:13 | firefox-esr | 128.14.0esr-1, 128.14.0esr-1~deb11u1, 128.14.0esr-1~deb12u1 |
| Debian:11 | thunderbird | 91.0, 91.0, 91.1.0-1 |
| Debian:11 | firefox-esr | 102.9.0, 115.1.0, 115.10.0 |
| Debian:13 | thunderbird | 140.8.0, 140.8.0, 140.7.1 |
Exploit Intelligence
- mfsa2026-15.yml (github-poc)
- poc.js (github-poc)
Timeline
- Feb 24, 2026 CVE Published
- Apr 28, 2026 CVE Updated