CVE-2025-29072Network attack vector

Unauthenticated node denial of service via integer overflow

Published Mar 27, 2025 · Updated Mar 28, 2025

Integer overflow in Nethermind Juno before 0.12.5 allows remote attackers to stall a full node with a malicious Declare v2/v3 transaction. The Sierra bytecode decompressor performs unchecked integer arithmetic during Cairo-class compilation, allowing an overflow value to keep its loop running indefinitely. Processing requires no authentication and can saturate the node's CPU, stall JSON-RPC service, or shut the node down.

CVSS severity7.5
High
EPSS probability0.47%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Integer overflow in Nethermind Juno before 0.12.5 allows remote attackers to stall a full node with a malicious Declare v2/v3 transaction. The Sierra bytecode decompressor performs unchecked integer arithmetic during Cairo-class compilation, allowing an overflow value to keep its loop running indefinitely. Processing requires no authentication and can saturate the node's CPU, stall JSON-RPC service, or shut the node down.

The record

CVE
CVE-2025-29072
Published
Mar 27, 2025
Updated
Mar 28, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-190, T1499.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 27, 2025CVE publishedPublication date reported by the CVE source.
  2. Mar 28, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-190Integer Overflow or Wraparound
T1499.002Service Exhaustion Flood

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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