VDB
DEBIAN-CVE-2026-4684
DEBIAN-CVE-2026-4684
PUBLISHED
CVSS 7.5 HIGH
Race condition, use-after-free in the Graphics: WebRender component. This vulnerability was fixed in Firefox 149, Firefox ESR 115.34, Firefox ESR 140.9, Thunderbird 149, and Thunderbird 140.9.
Risk Scores
CVSS 3.1
7.5
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Debian:12 | firefox-esr | 102.15.0, 128.3.0esr-1~deb11u2, 128.3.0esr-1~deb11u1 |
| Debian:13 | firefox-esr | 140.9.0, 140.9.0, 140.8.0 |
| Debian:11 | thunderbird | 115.15.0-1, 115.16.0, 115.16.0 |
| Debian:11 | firefox-esr | 115.9.1esr-1, 0, 102.1.0esr-2 |
| Debian:14 | firefox-esr | 140.3.1esr-2, 140.3.1esr-1~deb13u1, 140.3.1esr-1~deb12u1 |
| Debian:14 | thunderbird | 140.7.0, 140.7.0, 140.7.0 |
| Debian:13 | thunderbird | 1:140.4.0esr-1~deb13u1, 1:140.4.0esr-1~deb11u1, 1:140.3.1esr-1 |
| Debian:12 | thunderbird | 1:115.11.0-1, 1:115.10.1-1~deb12u1, 1:115.10.1-1~deb11u1 |
Exploit Intelligence
- mfsa2026-23.yml (github-poc)
- 2026.xml (github-poc)
Timeline
- Mar 24, 2026 CVE Published
- Apr 28, 2026 CVE Updated