Heap-Based Buffer Overflow Vulnerability in QuickJS by Fabrice Bellard
CVE-2025-46688

8.4HIGH

Key Information:

Vendor

Quickjs Project

Status
Quickjs
Vendor
CVE Published:
27 April 2025

What is CVE-2025-46688?

QuickJS versions up to 0.9.0 are affected by a heap-based buffer overflow due to an incorrect size calculation in the JS_ReadBigInt function for BigInt values. This vulnerability could potentially allow attackers to exploit the memory handling of the JavaScript runtime, leading to unexpected behavior or crashes. Users are advised to upgrade to the latest version to mitigate this risk.

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Deploy the Patch

Affected Version(s)

QuickJS 0 < 2025-04-26

References

https://github.com/quickjs-ng/quickjs/issues/1018
https://github.com/quickjs-ng/quickjs/pull/1020
https://github.com/bellard/quickjs/commit/1eb05e44fad89da...

CVSS V3.1

Score:
8.4
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

JSON
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