CVE-2025-64097Network attack vector

Authentication bypass via predictable API tokens

Published Jan 22, 2026 · Updated Jan 22, 2026

Authentication bypass in NervesHub before 2.3.0 allows remote attackers to access user accounts by brute-forcing predictable API tokens. The user API token generator embedded user-identifiable components in tokens and relied on a predictable, non-cryptographic format. Exploitation requires network access and knowledge of the approximate token-creation time; a guessed token grants the account and API privileges assigned to its owner.

CVSS severity9.5
Critical
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

Authentication bypass in NervesHub before 2.3.0 allows remote attackers to access user accounts by brute-forcing predictable API tokens. The user API token generator embedded user-identifiable components in tokens and relied on a predictable, non-cryptographic format. Exploitation requires network access and knowledge of the approximate token-creation time; a guessed token grants the account and API privileges assigned to its owner.

The record

CVE
CVE-2025-64097
Published
Jan 22, 2026
Updated
Jan 22, 2026
Vendor
NervesHub
Product
NervesHub
Classifications
CWE-330, T1110
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 22, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 22, 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=>= 1.0.0, < 2.3.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

NervesHub · NervesHubversion=>= 1.0.0, < 2.3.0

Published CVSS scores

9.5GitHub, Inc.CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:H
9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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-330Use of Insufficiently Random Values
T1110Brute Force

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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