CVE-2025-46688
HIGHCVSS 8.4/10EPSS 0.26%
Last modified
CVE-2025-46688 is a high-severity vulnerability rated 8.4/10 on the CVSS scale. 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.. EPSS estimates a 0.26% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Quickjs-Ng | Quickjs | <= 0.9.0 |
| Quickjs Project | Quickjs | < 2025-04-26 |
References
- https://github.com/bellard/quickjs/issues/399Exploit, Third Party Advisory
- https://github.com/quickjs-ng/quickjs/issues/1018Third Party Advisory
- https://github.com/quickjs-ng/quickjs/issues/1018Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2025-46688?
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.
How severe is CVE-2025-46688?
CVE-2025-46688 has a CVSS score of 8.4/10 (HIGH severity). The EPSS model estimates a 0.26% probability of exploitation in the next 30 days.
How do I fix CVE-2025-46688?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
Are you affected by CVE-2025-46688?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST