VDB
DEBIAN-CVE-2026-4690
DEBIAN-CVE-2026-4690
PUBLISHED
CVSS 9.300000190734863 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 v4.0
9.300000190734863
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Debian:13 | firefox-esr | 140.8.0, 140.8.0, 140.9.0 |
| Debian:14 | thunderbird | 1:140.7.1esr-1~deb13u1, 1:140.8.0esr-1~deb11u1, 1:140.8.0esr-1~deb13u1 |
| Debian:11 | thunderbird | 91.5.0-1, 91.5.0-1, 91.5.0-2 |
| Debian:11 | firefox-esr | 102.5.0esr-1, 91.9.1, 91.9.1 |
| Debian:12 | firefox-esr | 140.9.0, 0, 102.12.0esr-1 |
| Debian:14 | firefox-esr | 140.3.1, 140.3.1, 140.3.1 |
| Debian:13 | thunderbird | 1:140.8.0esr-1~deb13u1, 1:140.8.0esr-1~deb12u1, 1:140.8.0esr-1~deb11u1 |
| Debian:12 | thunderbird | 140.4.0, 140.4.0, 140.4.0 |
Exploit Intelligence
- mfsa2026-23.yml (github-poc)
- 2026.xml (github-poc)
Timeline
- Mar 24, 2026 CVE Published
- Apr 28, 2026 CVE Updated