VDB
DEBIAN-CVE-2021-43542
DEBIAN-CVE-2021-43542
PUBLISHED
CVSS 6.5 MEDIUM
Using XMLHttpRequest, an attacker could have identified installed applications by probing error messages for loading external protocols. This vulnerability affects Thunderbird < 91.4.0, Firefox ESR < 91.4.0, and Firefox < 95.
Risk Scores
CVSS v3.1
6.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Debian:14 | thunderbird | 0, 0, 0 |
| Debian:11 | firefox-esr | *, *, * |
| Debian:11 | thunderbird | *, 1:78.14.0-1~deb11u1, 1:78.14.0-1~deb9u1 |
| Debian:13 | firefox-esr | 0, 0, 0 |
| Debian:13 | thunderbird | 0, 0, 0 |
| Debian:14 | firefox-esr | 0, 0, 0 |
| Debian:12 | thunderbird | 0, 0, 0 |
| Debian:12 | firefox-esr | 0, 0, 0 |
Timeline
- Dec 8, 2021 CVE Published
- Apr 28, 2026 CVE Updated