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Security Vulnerabilities fixed in Firefox 143.0.3 — Mozilla

🗓️ 30 Sep 2025 00:00:00Reported by Mozilla FoundationType 
mozilla
 mozilla
🔗 www.mozilla.org👁 6 Views

Firefox 143.0.3 fixes sandbox escape in Canvas2D overflow and JavaScript engine JIT miscompilation.

Related
Detection
Refs
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30 Sep 202500:00
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30 Sep 202500:00
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30 Sep 202512:49
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30 Sep 202513:15
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20 May 202605:53
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Astra Linux - уязвимость в firefox
20 May 202605:53
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3 Oct 202518:40
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Vulners
Node
mozillafirefoxRange<143.0.3

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30 Sep 2025 00:00Current
7.3High risk
Vulners AI Score7.3
CVSS 3.18.6
EPSS0.00062
SSVC
6