CVE-2025-70955_CVE-2025-70955

7.5 / 10

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Description

A Stack Overflow vulnerability was discovered in the TON Virtual Machine (TVM) before v2024.10. The vulnerability stems from the improper handling of vmstate and continuation jump instructions, which allow for continuous dynamic tail calls. An attacker can exploit this by crafting a smart contract with deeply nested jump logic. Even within permissible gas limits, this nested execution exhausts the host process's stack space, causing the validator node to crash. This results in a Denial of Service (DoS) for the TON blockchain network.

Basic Information

ID CVE-2025-70955

Source mitre

Published Feb 13, 2026 at 00:00

Modified Feb 18, 2026 at 14:33

Affected Product

Vendor n/a

Product n/a

Version n/a

Affected Versions n/a n/a n/a

CWE Classification

CWE-674

References

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    "published": "2026-02-13T00:00:00.000Z",
    "modified": "2026-02-18T14:33:54.465Z",
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