VDB
DEBIAN-CVE-2026-0891
DEBIAN-CVE-2026-0891
PUBLISHED
CVSS 8.100000381469727 HIGH
Memory safety bugs present in Firefox ESR 140.6, Thunderbird ESR 140.6, Firefox 146 and Thunderbird 146. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 147, Firefox ESR 140.7, Thunderbird 147, and Thunderbird 140.7.
Risk Scores
CVSS 3.1
8.100000381469727
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Debian:13 | thunderbird | 1:135.0-1, 1:137.0-1, 1:138.0-1 |
| Debian:14 | firefox-esr | 140.3.1esr-2, *, * |
| Debian:14 | thunderbird | *, 1:128.14.0esr-1, 1:128.13.0esr-1 |
| Debian:12 | firefox-esr | 128.6.0esr-1~deb11u1, 128.6.0esr-1, 128.5.1esr-1 |
| Debian:11 | firefox-esr | 128.13.0esr-1, 102.1.0esr-1, 102.1.0esr-2 |
| Debian:13 | firefox-esr | *, *, 140.7.0 |
| Debian:11 | thunderbird | 1:115.4.1-1~deb10u1, 1:115.4.1-1, 1:115.3.1-1~deb12u1 |
| Debian:12 | thunderbird | 1:115.4.1-1~deb12u1, 1:115.4.1-1~deb11u1, 1:115.3.1-1~deb12u1 |
Exploit Intelligence
- DLA-4442-1.json (github-poc)
- threats.json (github-poc)
- 2026.xml (github-poc)
- 2026.xml (github-poc)
- simulation-scenarios.ts (github-poc)
- script.js (github-poc)
Timeline
- Jan 13, 2026 CVE Published
- Apr 28, 2026 CVE Updated