The vulnerability of Mozilla Firefox, Firefox ESR, and the email client Thunderbird relates to the execution of operations outside the buffer in memory. This allows an attacker to execute arbitrary code or cause a service failure.
🗓️ 12 Dec 2025 00:00:00Reported by FSTEC of Russia — Information Security Threat DatabaseType 
bdu_fstec🔗 bdu.fstec.ru👁 6 Views
| Reporter | Title | Published | Views | Family All 303 |
|---|---|---|---|---|
 | Amazon Linux 2023 : firefox (ALAS2023-2025-1337) | 8 Jan 202600:00 | – | nessus |
| Amazon Linux 2 : thunderbird, --advisory ALAS2-2025-3108 (ALAS-2025-3108) | 5 Jan 202600:00 | – | nessus |
| Amazon Linux 2 : firefox, --advisory ALAS2FIREFOX-2025-049 (ALASFIREFOX-2025-049) | 5 Jan 202600:00 | – | nessus |
| AlmaLinux 9 : firefox (ALSA-2025:23034) | 12 Dec 202500:00 | – | nessus |
| AlmaLinux 10 : firefox (ALSA-2025:23035) | 12 Dec 202500:00 | – | nessus |
| AlmaLinux 8 : firefox (ALSA-2025:23128) | 12 Dec 202500:00 | – | nessus |
| AlmaLinux 9 : thunderbird (ALSA-2025:23856) | 24 Dec 202500:00 | – | nessus |
| AlmaLinux 10 : thunderbird (ALSA-2026:0025) | 6 Jan 202600:00 | – | nessus |
| AlmaLinux 8 : thunderbird (ALSA-2026:0026) | 7 Jan 202600:00 | – | nessus |
| Debian dla-4401 : firefox-esr - security update | 11 Dec 202500:00 | – | nessus |
10
Node
OR
10
Data
Build on a solid foundation with Vulners data
We provide the essential building blocks for cybersecurity solutions with comprehensive, structured, and constantly updated vulnerability and exploits data
Api
Power your application with Vulners API
The Vulners REST API offers reliable, high-performance access to vulnerability intelligence, with 99.9% SLA uptime and CDN-backed data delivery for seamless global access
App
Assess and manage vulnerabilities with Vulners tools
Built on top of Vulners' database and SDK, end-user solutions give security professionals and developers lightweight and powerful tools for vulnerability remediation
07 Sep 2026 00:00Current
7.9High risk
Vulners AI Score7.9
CVSS 27.6
CVSS 38.1
EPSS0.00442