CVE-2025-55299Network attack vector

Unauthenticated account access via empty-password API login

Published Aug 18, 2025 · Updated Aug 18, 2025

Authentication bypass in 7ritn VaulTLS before 0.9.1 allows remote attackers to access user accounts through the login API. The user-creation handler hashes an empty string instead of storing NULL, while the login handler accepts API requests when password login is disabled. Knowledge of an affected account's email address is sufficient to authenticate with an empty password and obtain that account's certificate access and permissions.

CVSS severity9.4
Critical
EPSS probability0.22%
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 7ritn VaulTLS before 0.9.1 allows remote attackers to access user accounts through the login API. The user-creation handler hashes an empty string instead of storing NULL, while the login handler accepts API requests when password login is disabled. Knowledge of an affected account's email address is sufficient to authenticate with an empty password and obtain that account's certificate access and permissions.

The record

CVE
CVE-2025-55299
Published
Aug 18, 2025
Updated
Aug 18, 2025
Vendor
7ritn
Product
VaulTLS
Classifications
CWE-521, T1078
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 18, 2025CVE publishedPublication date reported by the CVE source.
  2. Aug 18, 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=< 0.9.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

7ritn · VaulTLSversion=< 0.9.1

Published CVSS scores

9.4GitHub CNACVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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-521Weak Password Requirements
T1078Valid Accounts

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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