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.
CVE-2025-70956
Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-02-14. NVD baseline CVSS 7.5; sources differ by 0.0.
- High severity, but no confirmed exploitation yet
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 7.5
- EG Score
- 7.5(medium)
- EG Risk
- 49(Track)EG Risk 49/100SSVC: Track
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computedSeverity75% × 45%Exploitation0% × 40%Automatability100% × 15%Action: Routine — remediate on your standard cadence. - EPSS
- 37.0%
- KEV
- Not listed
Published
February 13, 2026
Last Modified
April 15, 2026
References (4)
- cve@mitrehttps://gist.github.com/Lucian-code233/beab9d14683ed2bdf5543be430b91c70
- cve@mitrehttps://github.com/ton-blockchain/ton/commit/1835d84602bbaaa1593270d7ab3bb0b499920416
- cve@mitrehttps://github.com/ton-blockchain/ton/releases/tag/v2025.04#:~:text=Arayz%2C%20Robinlzw%2C%20%40wy666444%20%40Lucian-code233
- cve@mitrehttps://mp.weixin.qq.com/s/ZD35baKUikefFdtNHZIC9g
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 13× in last 7d / 49× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
Showing the most recent 100 of 121 total refreshes for this CVE.
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Frequently asked(5)
What is CVE-2025-70956?
When was CVE-2025-70956 disclosed?
Is CVE-2025-70956 actively exploited?
What is the CVSS score of CVE-2025-70956?
How do I remediate CVE-2025-70956?
Dependency Blast Radius
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