CVE-2025-46687 Memory corruption in QuickJS
A heap-based buffer overflow in QuickJS allows attackers to execute arbitrary code or cause denial of service via crafted strings.
- 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-2025-46687?
CVE-2025-46687 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 a missing length check in JS_ReadString for a string, leading to a heap-based buffer overflow. QuickJS before 2025-04-26 is also affected.
Weakness: CWE-770
Which versions are affected by CVE-2025-46687?
It affects 2 products.
Products include Bellard Quickjs, Quickjs-Ng Quickjs.
How do I fix CVE-2025-46687?
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-2025-46687 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-46687 exists.
Other vulnerabilities in QuickJS
Sources
Also known as ALPINE-CVE-2025-46687, DEBIAN-CVE-2025-46687, GHSA-hrc5-3jpv-g9x2, UBUNTU-CVE-2025-46687.