CVE-2022-46173Network attack vector

Metachain block notarization halt via SCR cache miss

Published Dec 28, 2022 · Updated Apr 11, 2025

A processing issue in mx-chain-go before 1.3.50 allows remote attackers to halt metachain block notarization via crafted cross-shard transactions. The smart-contract preprocessor places a leftover-gas smart contract result in a cache that the processing unit does not search, so the relayed transaction cannot be correlated correctly. An attacker must submit a cross-shard relayed transaction carrying smart-contract deployment data and excess gas; the affected node then stops notarizing metachain blocks until fixed software is used.

CVSS severity7.2
High
EPSS probability0.72%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

A processing issue in mx-chain-go before 1.3.50 allows remote attackers to halt metachain block notarization via crafted cross-shard transactions. The smart-contract preprocessor places a leftover-gas smart contract result in a cache that the processing unit does not search, so the relayed transaction cannot be correlated correctly. An attacker must submit a cross-shard relayed transaction carrying smart-contract deployment data and excess gas; the affected node then stops notarizing metachain blocks until fixed software is used.

The record

CVE
CVE-2022-46173
Published
Dec 28, 2022
Updated
Apr 11, 2025
Vendor
MultiversX
Product
mx-chain-go
Classifications
CWE-669, T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 28, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 11, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 1.3.50

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

MultiversX · mx-chain-goversion=< 1.3.50

Published CVSS scores

7.2GitHub Advisory DatabaseCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-669Incorrect Resource Transfer Between Spheres
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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