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CVE-2025-8027
Published: Jul 22, 2025
Modified: Apr 13, 2026
PUBLISHED
Description
On 64-bit platforms IonMonkey-JIT only wrote 32 bits of the 64-bit return value space on the stack. Baseline-JIT, however, read the entire 64 bits. This vulnerability was fixed in Firefox 141, Firefox ESR 115.26, Firefox ESR 128.13, Firefox ESR 140.1, Thunderbird 141, Thunderbird 128.13, and Thunderbird 140.1.
| Vendor | Product | Versions |
|---|---|---|
Mozilla | Firefox | unaffected 115.26 - <= 115.*unaffected 128.13 - <= 128.*unaffected 140.1 - <= 140.*unaffected 141 - <= * |
Mozilla | Thunderbird | unaffected 128.13 - <= 128.*unaffected 140.1 - <= 140.*unaffected 141 - <= * |
References
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