VDB
DEBIAN-CVE-2026-6752
DEBIAN-CVE-2026-6752
PUBLISHED
CVSS 7.300000190734863 HIGH
Record from OSV · Published April 21, 2026
Incorrect boundary conditions in the WebRTC component. This vulnerability was fixed in Firefox 150, Firefox ESR 115.35, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10.
Fixed versions
Upgrade to a fixed version or later. Language registries are listed first, then Linux distributions, then vendor products.
| Package | Ecosystem | Fixed in |
|---|---|---|
| thunderbird | Debian:12 | 1:140.10.0esr-1~deb12u1 |
| thunderbird | Debian:13 | 1:140.10.0esr-1~deb13u1 |
| firefox-esr | Debian:12 | 140.10.0esr-1~deb12u1 |
| firefox-esr | Debian:13 | 140.10.0esr-1~deb13u1 |
| thunderbird | Debian:14 | 1:140.10.0esr-1 |
| firefox-esr | Debian:14 | 140.10.0esr-1 |
Risk scores
CVSS 3.1
7.300000190734863
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Affected products
| Vendor | Product | Versions |
|---|---|---|
| Debian:12 | thunderbird | 1:115.3.1-1~deb12u1, 1:102.11.0-1, 1:102.12.0-1 |
| Debian:13 | thunderbird | 1:135.0-1, 1:140.4.0esr-1~deb12u1, 1:140.4.0esr-1~deb11u1 |
| Debian:12 | firefox-esr | 140.9.1esr-1~deb13u1, 102.15.1esr-1~deb12u1, 115.0.2esr-1 |
| Debian:13 | firefox-esr | 140.7.0esr-1~deb13u1, 140.7.0esr-1~deb12u1, 140.7.0esr-1~deb11u1 |
| Debian:14 | thunderbird | 1:140.8.0esr-1~deb11u1, 1:140.8.0esr-1~deb12u1, 1:140.8.0esr-1~deb13u1 |
| Debian:14 | firefox-esr | 128.13.0esr-1, 128.14.0esr-1, 128.14.0esr-1~deb11u1 |
Timeline
- Apr 21, 2026 CVE Published
- Oct 26, 2026 CVE Updated
Query this with the API
The same record, from the CLI:
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vulnetix vdb fixes DEBIAN-CVE-2026-6752Or with curl, using the org id and key from your account page:
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