CVE-2025-46688 Memory corruption in QuickJS
Heap-based buffer overflow in QuickJS allows attackers to execute arbitrary code or cause denial of service via crafted BigInt input.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2025-46688?
CVE-2025-46688 is a medium-severity memory corruption vulnerability in QuickJS, published on 27 Apr 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official 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.
Weakness: CWE-131
Which versions are affected by CVE-2025-46688?
It affects 2 products.
Products include Quickjs-Ng Quickjs, Quickjs Project Quickjs.
How do I fix CVE-2025-46688?
Upgrade to a fixed version.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2025-46688 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-46688 exists.
Other vulnerabilities in QuickJS
- CVE-2026-0821 quickjs-ng quickjs quickjs.c js_typed_array_constructor heap-based overflow
- CVE-2026-1144 quickjs-ng quickjs Atomics Ops quickjs.c use after free
- CVE-2026-1145 quickjs-ng quickjs quickjs.c js_typed_array_constructor_ta heap-based overflow
- CVE-2026-0822 quickjs-ng quickjs quickjs.c js_typed_array_sort heap-based overflow
- CVE-2024-13903 quickjs-ng QuickJS qjs quickjs.c JS_GetRuntime stack-based overflow
Sources
Also known as ALPINE-CVE-2025-46688, DEBIAN-CVE-2025-46688, GHSA-2qc3-w5w6-7r8m, UBUNTU-CVE-2025-46688.