| CVE ID | CVE-2025-4919 |
| CVSS SCORE | 8.8, AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
| AFFECTED VENDORS |
Mozilla |
| AFFECTED PRODUCTS |
Firefox |
| VULNERABILITY DETAILS |
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Mozilla Firefox. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the IonMonkey JIT compiler. The issue results from the lack of proper validation of user-supplied data, which can result in an integer overflow before writing to memory. An attacker can leverage this vulnerability to execute code in the context of the current process. |
| ADDITIONAL DETAILS |
Mozilla has issued an update to correct this vulnerability. More details can be found at:
https://www.mozilla.org/en-US/security/advisories/mfsa2025-36/ |
| DISCLOSURE TIMELINE |
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| CREDIT | Manfred Paul (@manf@infosec.exchange) |
