VDB
DEBIAN-CVE-2026-2780
DEBIAN-CVE-2026-2780
PUBLISHED
CVSS 9.800000190734863 CRITICAL
Privilege escalation in the Netmonitor component. This vulnerability was fixed in Firefox 148, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 140.8.
Risk Scores
CVSS 3.1
9.800000190734863
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Debian:12 | firefox-esr | 128.12.0esr-1~deb11u1, 115.14.0, 115.13.0 |
| Debian:13 | thunderbird | 1:140.3.0esr-1~deb13u1, 138.0-1, 137.0-1 |
| Debian:14 | thunderbird | 140.1.0, 140.0.1, 138.0-1 |
| Debian:12 | thunderbird | 0, 1:102.11.0-1, 1:102.12.0-1 |
| Debian:14 | firefox-esr | 140.3.1esr-1, 140.3.1esr-1~deb11u1, 140.3.1esr-1~deb12u1 |
| Debian:13 | firefox-esr | *, 128.14.0, 128.14.0 |
| Debian:11 | firefox-esr | 140.5.0, 140.5.0, 140.5.0 |
| Debian:11 | thunderbird | 0, 130.0, 132.0 |
Exploit Intelligence
- seen_cves.json (github-poc)
- mfsa2026-15.yml (github-poc)
Timeline
- Feb 24, 2026 CVE Published
- Apr 28, 2026 CVE Updated