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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👁 47 Views

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

Related
Detection
Refs
ReporterTitlePublishedViews
Family
freebsd
FreeBSD
Firefox -- JIT miscompilation in the JavaScript Engine
30 Sep 202500:00
–freebsd
freebsd
FreeBSD
Firefox -- Sandbox escape
30 Sep 202500:00
–freebsd
freebsd
FreeBSD
Firefox -- Sandbox escape due to integer overflow
30 Sep 202500:00
–freebsd
attackerkb
attackerkb
CVE-2025-11153
30 Sep 202512:49
–attackerkb
attackerkb
attackerkb
CVE-2025-11152
30 Sep 202512:49
–attackerkb
alpinelinux
AlpineLinux
CVE-2025-11152
30 Sep 202513:15
–alpinelinux
alpinelinux
AlpineLinux
CVE-2025-11153
30 Sep 202513:15
–alpinelinux
astralinux
AstraLinux
Astra Linux – Vulnerability in Firefox
15 Oct 202615:53
–astralinux
astralinux
AstraLinux
Astra Linux – Vulnerability in Firefox
5 Oct 202611:39
–astralinux
bdu_fstec
BDU FSTEC
Canvas2D Component Code Execution
14 Oct 202500:00
–bdu_fstec
Rows per page
Vulners
Node
mozillafirefoxRange<143.0.3

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30 Sep 2025 00:00Current
7High risk
Vulners AI Score7
CVSS 3.18.6
EPSS0.0027
SSVC
47