VDB
DEBIAN-CVE-2021-4140
DEBIAN-CVE-2021-4140
PUBLISHED
CVSS 10 CRITICAL
It was possible to construct specific XSLT markup that would be able to bypass an iframe sandbox. This vulnerability affects Firefox ESR < 91.5, Firefox < 96, and Thunderbird < 91.5.
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:12 | thunderbird | 0, 0, 0 |
| Debian:14 | thunderbird | 0, 0, 0 |
| Debian:14 | firefox-esr | 0, 0, 0 |
| Debian:11 | thunderbird | 78.14.0-1, 78.14.0-1, 84.0 |
| Debian:13 | firefox-esr | 0, 0, 0 |
| Debian:13 | thunderbird | 0, 0, 0 |
| Debian:11 | firefox-esr | 78.13.0, 78.14.0, 78.14.0 |
| Debian:12 | firefox-esr | 0, 0, 0 |
Timeline
- Dec 22, 2022 CVE Published
- Apr 28, 2026 CVE Updated