CVE-2025-62370Network attack vector

Service crash via empty type linearization

Published Oct 15, 2025 · Updated Oct 15, 2025

Denial of service in Alloy Core before 0.8.26 and 1.0.0 through 1.4.0 allows remote attackers to crash consuming services. Resolver::encode_type accepts a TypedData primary type that linearizes to an empty list, then unwraps its absent first element during eip712_signing_hash, causing a panic. Exposure requires an application to pass attacker-controlled EIP-712 typed data into the library; repeated requests can interrupt a network service.

CVSS severity7.5
High
EPSS probability0.45%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in Alloy Core before 0.8.26 and 1.0.0 through 1.4.0 allows remote attackers to crash consuming services. Resolver::encode_type accepts a TypedData primary type that linearizes to an empty list, then unwraps its absent first element during eip712_signing_hash, causing a panic. Exposure requires an application to pass attacker-controlled EIP-712 typed data into the library; repeated requests can interrupt a network service.

The record

CVE
CVE-2025-62370
Published
Oct 15, 2025
Updated
Oct 15, 2025
Vendor
Alloy
Product
Alloy Core
Classifications
CWE-248, CWE-20, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 15, 2025CVE publishedPublication date reported by the CVE source.
  2. Oct 15, 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=< 0.8.26
  2. Affected versionversion=>= 1.0.0, < 1.4.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Alloy · Alloy Coreversion=< 0.8.26; version=>= 1.0.0, < 1.4.1

Published CVSS scores

7.5GitHubCVSS: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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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-248Uncaught Exception
CWE-20Improper Input Validation
T1499.004Application or System Exploitation

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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