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.
History

Tue, 17 Feb 2026 19:15:00 +0000

Type Values Removed Values Added
References
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 17 Feb 2026 15:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-476
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 17 Feb 2026 09:00:00 +0000

Type Values Removed Values Added
First Time appeared Ton-blockchain
Ton-blockchain ton
Vendors & Products Ton-blockchain
Ton-blockchain ton

Fri, 13 Feb 2026 21:45:00 +0000

Type Values Removed Values Added
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.
References

cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2026-02-13T00:00:00.000Z

Updated: 2026-02-17T18:29:09.899Z

Reserved: 2026-01-09T00:00:00.000Z

Link: CVE-2025-70954

cve-icon Vulnrichment

Updated: 2026-02-17T15:10:23.301Z

cve-icon NVD

Status : Received

Published: 2026-02-13T22:16:10.047

Modified: 2026-02-17T19:21:55.453

Link: CVE-2025-70954

cve-icon Redhat

No data.