CVE-2026-40092Network attack vector

Remote node crash via malformed Ed25519 signature

Published May 20, 2026 · Updated May 20, 2026

Unchecked return handling in core-rs-albatross 1.3.0 and earlier allows remote attackers to crash a full node via a crafted DHT record. TaggedPublicKey::verify passes the record's non-64-byte Ed25519 signature to Ed25519Signature::from_bytes and unwraps the error, causing a panic instead of rejecting the record. Any malicious network peer can trigger the crash without credentials or user interaction; no confidentiality or integrity impact is reported.

CVSS severity7.5
High
EPSS probability0.63%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Unchecked return handling in core-rs-albatross 1.3.0 and earlier allows remote attackers to crash a full node via a crafted DHT record. TaggedPublicKey::verify passes the record's non-64-byte Ed25519 signature to Ed25519Signature::from_bytes and unwraps the error, causing a panic instead of rejecting the record. Any malicious network peer can trigger the crash without credentials or user interaction; no confidentiality or integrity impact is reported.

The record

CVE
CVE-2026-40092
Published
May 20, 2026
Updated
May 20, 2026
Vendor
Nimiq
Product
core-rs-albatross
Classifications
CWE-252
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 20, 2026CVE publishedPublication date reported by the CVE source.
  2. May 20, 2026Record 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=< 1.4.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Nimiq · core-rs-albatrossversion=< 1.4.0

Published CVSS scores

7.5GitHub, Inc.CVSS: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 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-252Unchecked Return Value

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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