CVE-2025-3194 bigint-buffer Vulnerable to Buffer Overflow via toBigIntLE() Function
Attackers can crash applications using the bigint-buffer library by triggering a buffer overflow in the toBigIntLE function.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2025-3194?
CVE-2025-3194 is a high-severity memory corruption vulnerability in bigint-buffer, published on 4 Apr 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Versions of the package bigint-buffer from 0.0.0 are vulnerable to Buffer Overflow in the toBigIntLE() function. Attackers can exploit this to crash the application.
Weakness: CWE-120
Which versions are affected by CVE-2025-3194?
2 open source packages ship an affected version, including bigint-buffer.
| Package | Affected | Fixed in |
|---|---|---|
bigint-buffer npm | All versions to 1.1.5 | None |
bigint-buffer npm | All versions to 1.1.5 | None |
How do I fix CVE-2025-3194?
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-2025-3194 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-3194 exists.
Public exploit code: 2 proofs of concept on GitHub.
Sources
Also known as CLSA-2026-1773879460, GHSA-3gc7-fjrx-p6mg, ROOT-APP-NPM-CVE-2025-3194.