The vulnerability of Mozilla Firefox, Firefox ESR, and the email client Thunderbird relates to reading data beyond the buffer in memory, allowing an attacker to execute arbitrary code.
🗓️ 18 May 2026 00:00:00Reported by FSTEC of Russia — Information Security Threat DatabaseType 
bdu_fstec🔗 bdu.fstec.ru👁 4 Views
| Reporter | Title | Published | Views | Family All 434 |
|---|---|---|---|---|
 | Mozilla -- Memory safety bugs | 21 Apr 202600:00 | – | freebsd |
 | CVE-2026-6785 | 21 Apr 202612:41 | – | attackerkb |
 | Amazon Linux 2023 : firefox (ALAS2023-2026-1652) | 20 May 202600:00 | – | nessus |
| Amazon Linux 2 : thunderbird, --advisory ALAS2-2026-3290 (ALAS-2026-3290) | 14 May 202600:00 | – | nessus |
| Amazon Linux 2 : firefox, --advisory ALAS2FIREFOX-2026-058 (ALASFIREFOX-2026-058) | 14 May 202600:00 | – | nessus |
| AlmaLinux 9 : firefox (ALSA-2026:10757) | 30 Apr 202600:00 | – | nessus |
| AlmaLinux 8 : firefox (ALSA-2026:10766) | 29 Apr 202600:00 | – | nessus |
| AlmaLinux 10 : firefox (ALSA-2026:10767) | 30 Apr 202600:00 | – | nessus |
| AlmaLinux 10 : thunderbird (ALSA-2026:12285) | 3 May 202600:00 | – | nessus |
| AlmaLinux 8 : thunderbird (ALSA-2026:13537) | 5 May 202600:00 | – | nessus |
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07 Jul 2026 00:00Current
6.2Medium risk
Vulners AI Score6.2
CVSS 27.6
CVSS 38.1
EPSS0.00513