TON Virtual Machine prior 2024.10 denial of service

CVSS Meta Temp Score
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CTI Interest Score
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5.8$0-$5k0.00

Summaryinfo

A vulnerability was found in TON Virtual Machine and classified as problematic. Impacted is an unknown function. Such manipulation leads to denial of service. This vulnerability is traded as CVE-2025-70955. The attack may be launched remotely. There is no exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in TON Virtual Machine. Affected by this issue is an unknown code. The manipulation with an unknown input leads to a denial of service vulnerability. Using CWE to declare the problem leads to CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. Impacted is availability. CVE summarizes:

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.

The advisory is shared for download at github.com. This vulnerability is handled as CVE-2025-70955 since 01/09/2026. The exploitation is known to be easy. The attack may be launched remotely. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1499.

Upgrading to version 2024.10 eliminates this vulnerability.

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Productinfo

Vendor

Name

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 2024.10

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: b5734d2e30b9c93cfdacb4ea37c9ebdf11ca5d49
Status: Confirmed

CVE: CVE-2025-70955 (🔒)
GCVE (CVE): GCVE-0-2025-70955
GCVE (VulDB): GCVE-100-345944

Entryinfo

Created: 02/13/2026 23:12
Updated: 02/20/2026 03:14
Changes: 02/13/2026 23:12 (54), 02/19/2026 03:58 (11), 02/20/2026 03:14 (1)
Complete: 🔍
Cache ID: 216::103

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