VDB
DEBIAN-CVE-2026-4689
DEBIAN-CVE-2026-4689
PUBLISHED
CVSS 10 CRITICAL
Sandbox escape due to incorrect boundary conditions, integer overflow in the XPCOM 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
10
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Debian:14 | thunderbird | 0, 1:140.9.0esr-1~deb13u1, 1:140.9.0esr-1~deb12u1 |
| Debian:12 | firefox-esr | 128.6.0esr-1~deb11u1, 128.6.0esr-1, 128.5.1esr-1 |
| Debian:13 | thunderbird | 1:140.5.0esr-1~deb13u1, 1:140.9.0esr-1~deb12u1, 1:140.9.0esr-1~deb11u1 |
| Debian:14 | firefox-esr | 128.14.0esr-1~deb11u1, 0, 128.13.0esr-1 |
| Debian:12 | thunderbird | 1:115.10.1-1~deb12u1, 1:115.10.1-1~deb11u1, 1:115.10.1-1~deb10u1 |
| Debian:13 | firefox-esr | 140.9.0esr-1~deb12u1, 140.9.0esr-1~deb11u1, 140.8.0esr-1~deb13u1 |
Timeline
- Mar 24, 2026 CVE Published
- Oct 1, 2026 CVE Updated