CVE-2025-70954 Null dereference in n/a
Attackers can crash validator nodes via malicious transactions in the TON Virtual Machine, causing network-wide denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-70954?
CVE-2025-70954 is a high-severity vulnerability in n/a, published on 13 Feb 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A Null Pointer Dereference vulnerability exists in the TON Virtual Machine (TVM) within the TON Blockchain before v2025.06. The issue is located in the execution logic of the INMSGPARAM instruction, where the program fails to validate if a specific pointer is null before accessing it. By sending a malicious transaction or smart contract, an attacker can trigger this null pointer dereference, causing the validator node process to crash (segmentation fault). This results in a Denial of Service (DoS) affecting the availability of the entire blockchain network.
Weakness: CWE-476
Which versions are affected by CVE-2025-70954?
How do I fix CVE-2025-70954?
No fix has been published for CVE-2025-70954 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-70954 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-70954 exists.
Sources
Also known as GHSA-g989-fg9h-96pr.