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CVE-2025-70956
TON Virtual Machine (TVM) State Pollution Denial of Service
Description

A State Pollution vulnerability was discovered in the TON Virtual Machine (TVM) before v2025.04. The issue exists in the RUNVM instruction logic (VmState::run_child_vm), which is responsible for initializing child virtual machines. The operation moves critical resources (specifically libraries and log) from the parent state to a new child state in a non-atomic manner. If an Out-of-Gas (OOG) exception occurs after resources are moved but before the state transition is finalized, the parent VM retains a corrupted state where these resources are emptied/invalid. Because RUNVM supports gas isolation, the parent VM continues execution with this corrupted state, leading to unexpected behavior or denial of service within the contract's context.

INFO

Published Date :

Feb. 13, 2026, 10:16 p.m.

Last Modified :

Feb. 13, 2026, 10:16 p.m.

Remotely Exploit :

No

Source :

[email protected]
Affected Products

The following products are affected by CVE-2025-70956 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

No affected product recoded yet

: Total Affected Vendor : 0 | Products : 0
Solution
Update TON Virtual Machine to v2025.04 or later to address the State Pollution vulnerability.
  • Update TON Virtual Machine to version 2025.04 or later.
  • Apply patches for the RUNVM instruction logic.
  • Ensure atomic state transitions for child VMs.
  • Validate resource handling during VM initialization.
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2025-70956.

URL Resource
https://gist.github.com/Lucian-code233/beab9d14683ed2bdf5543be430b91c70
https://github.com/ton-blockchain/ton/commit/1835d84602bbaaa1593270d7ab3bb0b499920416
https://github.com/ton-blockchain/ton/releases/tag/v2025.04#:~:text=Arayz%2C%20Robinlzw%2C%20%40wy666444%20%40Lucian-code233
https://mp.weixin.qq.com/s/ZD35baKUikefFdtNHZIC9g
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2025-70956 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2025-70956 weaknesses.

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2025-70956 vulnerability anywhere in the article.

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2025-70956 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • New CVE Received by [email protected]

    Feb. 13, 2026

    Action Type Old Value New Value
    Added Description A State Pollution vulnerability was discovered in the TON Virtual Machine (TVM) before v2025.04. The issue exists in the RUNVM instruction logic (VmState::run_child_vm), which is responsible for initializing child virtual machines. The operation moves critical resources (specifically libraries and log) from the parent state to a new child state in a non-atomic manner. If an Out-of-Gas (OOG) exception occurs after resources are moved but before the state transition is finalized, the parent VM retains a corrupted state where these resources are emptied/invalid. Because RUNVM supports gas isolation, the parent VM continues execution with this corrupted state, leading to unexpected behavior or denial of service within the contract's context.
    Added Reference https://gist.github.com/Lucian-code233/beab9d14683ed2bdf5543be430b91c70
    Added Reference https://github.com/ton-blockchain/ton/commit/1835d84602bbaaa1593270d7ab3bb0b499920416
    Added Reference https://github.com/ton-blockchain/ton/releases/tag/v2025.04#:~:text=Arayz%2C%20Robinlzw%2C%20%40wy666444%20%40Lucian-code233
    Added Reference https://mp.weixin.qq.com/s/ZD35baKUikefFdtNHZIC9g
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
Vulnerability Scoring Details
No CVSS metrics available for this vulnerability.