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The vulnerability in the “Copy as” function of Mozilla Firefox, Firefox ESR, and the Thunderbird email client allows a hacker to execute arbitrary code.
🗓️ 01 Jun 2025 00:00:00Reported by FSTEC of Russia — Information Security Threat DatabaseType 
bdu_fstec🔗 bdu.fstec.ru👁 3 Views
| Reporter | Title | Published | Views | Family All 382 |
|---|---|---|---|---|
 | Mozilla -- local code execution | 27 May 202500:00 | – | freebsd |
 | Amazon Linux 2023 : firefox (ALAS2023-2025-996) | 12 Jun 202500:00 | – | nessus |
| Amazon Linux 2 : thunderbird (ALAS-2025-2873) | 12 Jun 202500:00 | – | nessus |
| Amazon Linux 2 : firefox (ALASFIREFOX-2025-039) | 11 Jun 202500:00 | – | nessus |
| AlmaLinux 9 : firefox (ALSA-2025:8293) | 30 May 202500:00 | – | nessus |
| AlmaLinux 8 : firefox (ALSA-2025:8308) | 29 May 202500:00 | – | nessus |
| AlmaLinux 10 : firefox (ALSA-2025:8341) | 9 Oct 202500:00 | – | nessus |
| AlmaLinux 9 : thunderbird (ALSA-2025:8607) | 3 Jul 202500:00 | – | nessus |
| AlmaLinux 10 : thunderbird (ALSA-2025:8608) | 9 Oct 202500:00 | – | nessus |
| AlmaLinux 8 : thunderbird (ALSA-2025:8756) | 11 Jun 202500:00 | – | nessus |
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04 Mar 2026 00:00Current
6.8Medium risk
Vulners AI Score6.8
CVSS 24.3
CVSS 34.8
EPSS0.00135