CVE-2025-46688

Public Exploit

Description

quickjs-ng through 0.9.0 has an incorrect size calculation in JS_ReadBigInt for a BigInt, leading to a heap-based buffer overflow. QuickJS before 2025-04-26 is also affected.

References

Link	Tags
https://github.com/quickjs-ng/quickjs/issues/1018	third party advisory
https://github.com/quickjs-ng/quickjs/pull/1020	patch
https://github.com/bellard/quickjs/commit/1eb05e44fad89daafa8ee3eb74b8520b4a37ec9a	patch
https://github.com/quickjs-ng/quickjs/commit/28fa43d3ddff2c1ba91b6e3a788b2d7ba82d1465	patch
https://github.com/bellard/quickjs/issues/399	third party advisory exploit
https://bellard.org/quickjs/Changelog	product

Frequently Asked Questions

What is the severity of CVE-2025-46688?: CVE-2025-46688 has been scored as a medium severity vulnerability.
How to fix CVE-2025-46688?: To fix CVE-2025-46688, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2025-46688 being actively exploited in the wild?: It is possible that CVE-2025-46688 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2025-46688?: CVE-2025-46688 affects QuickJS Project QuickJS.

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Description

Category

CWE-131 – Incorrect Calculation of Buffer Size

References

Frequently Asked Questions