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CVE-2025-70955

HIGH

7.5

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.

Details CVE

Score CVSS v3.17.5

SeveriteHIGH

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

Vecteur d'attaqueNETWORK

ComplexiteLOW

Privileges requisNONE

Interaction utilisateurNONE

Publie2/13/2026

Derniere modification2/18/2026

Sourcenvd

Observations honeypot0

Faiblesses (CWE)

CWE-674

References

https://gist.github.com/Lucian-code233/25b0a13be569db9160340d9ecd2fdf0d(cve@mitre.org)

https://github.com/ton-blockchain/ton/commit/b5734d2e30b9c93cfdacb4ea37c9ebdf11ca5d49#diff-17eca9db515992a081522236bf9bad767fac171044f7c00c20bf740f4206b3de(cve@mitre.org)

https://github.com/ton-blockchain/ton/releases/tag/v2024.10#:~:text=krigga%20%28emulator%29%2C-%2CArayz%2C-%40%20TonBit%20%28LS%20security(cve@mitre.org)

https://mp.weixin.qq.com/s/wy2ea6udkNZzIsp1K2LEOQ(cve@mitre.org)

Correlations IOC

Aucune correlation enregistree

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