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The vulnerability of Mozilla Firefox, Firefox ESR, and the email client Thunderbird lies in their dependence on the reverse DNS resolver, which allows a hacker to cause a service failure.

🗓️ 07 Aug 2025 00:00:00Reported by FSTEC of Russia — Information Security Threat DatabaseType 
bdu_fstec
 bdu_fstec
🔗 bdu.fstec.ru👁 7 Views

Firefox, Firefox ESR, and Thunderbird depend on reverse domain name resolution, enabling remote attackers to cause service failures.

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04 Mar 2026 00:00Current
7.9High risk
Vulners AI Score7.9
CVSS 38.1
CVSS 29.4
EPSS0.0042
7