VDB
DEBIAN-CVE-2026-4687
DEBIAN-CVE-2026-4687
PUBLISHED
CVSS 8.600000381469727 HIGH
Sandbox escape due to incorrect boundary conditions in the Telemetry 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
8.600000381469727
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Debian:11 | thunderbird | 102.13.0-1, 102.13.0-1, 102.13.0-1 |
| Debian:13 | thunderbird | 140.9.0, 140.9.0, 140.8.0 |
| Debian:12 | thunderbird | 115.7.0-1, 1:102.12.0-1, 1:102.12.0-1~deb11u1 |
| Debian:13 | firefox-esr | 140.9.0, 140.9.0, 140.8.0 |
| Debian:14 | thunderbird | 0, 1:128.13.0esr-1, 1:128.14.0esr-1 |
| Debian:12 | firefox-esr | 140.9.0, 0, 102.11.0esr-1 |
| Debian:11 | firefox-esr | 115.14.0, 115.15.0, 115.15.0 |
| Debian:14 | firefox-esr | *, 128.13.0esr-1, 128.14.0esr-1~deb11u1 |
Exploit Intelligence
- mfsa2026-23.yml (github-poc)
- 2026.xml (github-poc)
- _18a_browser_cves_data.py (github-poc)
Timeline
- Mar 24, 2026 CVE Published
- Apr 28, 2026 CVE Updated