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Memory safety bugs present in Firefox 125. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 126.

🗓️ 03 Sep 2025 22:43:26Reported by MicrosoftType 
mscve
 mscve
🔗 msrc.microsoft.com

Firefox 125 memory safety bugs risk memory corruption and arbitrary code execution; affects Firefox under 126.

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03 Sep 2025 22:43Current
9.2High risk
Vulners AI Score9.2
CVSS 3.19.8
EPSS0.00415
SSVC
0