TON Virtual Machine 2024.10 VmState::run_child_vm denial of service

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.8$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, was found in TON Virtual Machine. This vulnerability affects the function VmState::run_child_vm. The manipulation results in denial of service. This vulnerability is reported as CVE-2025-70956. The attack can be launched remotely. No exploit exists. You should upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic has been found in TON Virtual Machine. Affected is the function VmState::run_child_vm. The manipulation with an unknown input leads to a denial of service vulnerability. CWE is classifying the issue as CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. This is going to have an impact on availability. CVE summarizes:

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.

The advisory is available at github.com. This vulnerability is traded as CVE-2025-70956 since 01/09/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1499 by the MITRE ATT&CK project.

Upgrading to version 2025.04 eliminates this vulnerability.

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Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.9
VulDB Meta Temp Score: 5.8

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

ADP CISA Base Score: 7.5
ADP CISA Vector: 🔒

CVSSv2info

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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Denial of service
CWE: CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Virtual Machine 2025.04

Timelineinfo

01/09/2026 CVE reserved
02/13/2026 +35 days Advisory disclosed
02/13/2026 +0 days VulDB entry created
02/20/2026 +7 days VulDB entry last update

Sourcesinfo

Advisory: 1835d84602bbaaa1593270d7ab3bb0b499920416
Status: Confirmed

CVE: CVE-2025-70956 (🔒)
GCVE (CVE): GCVE-0-2025-70956
GCVE (VulDB): GCVE-100-345942

Entryinfo

Created: 02/13/2026 23:11
Updated: 02/20/2026 03:14
Changes: 02/13/2026 23:11 (55), 02/18/2026 05:05 (12), 02/20/2026 03:14 (1)
Complete: 🔍
Cache ID: 216::103

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