CVE-2026-4720
EUVD-2026-1485524.03.2026, 13:16
Memory safety bugs present in Firefox ESR 140.8, Thunderbird ESR 140.8, Firefox 148 and Thunderbird 148. 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 affects Firefox < 149, Firefox ESR < 140.9, Thunderbird < 149, and Thunderbird < 140.9.
Affected Products (NVD)
| Vendor | Product | Version |
|---|---|---|
| mozilla | firefox_esr | 𝑥 < 140.9.0 |
| mozilla | firefox | 𝑥 < 149.0 |
| mozilla | thunderbird_esr | 𝑥 < 140.9.0 |
| mozilla | thunderbird | 𝑥 < 149.0 |
𝑥
= Vulnerable software versions
Debian Releases
Debian Product | |||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| firefox |
| ||||||||||||||||
| firefox-esr |
| ||||||||||||||||
| thunderbird |
|
Ubuntu Releases
Ubuntu Product | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| mozjs52 |
| ||||||||||
| firefox |
| ||||||||||
| thunderbird |
| ||||||||||
| mozjs38 |
| ||||||||||
| mozjs68 |
| ||||||||||
| mozjs78 |
| ||||||||||
| mozjs91 |
| ||||||||||
| mozjs102 |
| ||||||||||
| mozjs115 |
|
References