CVE-2025-5597Public exploitNetwork attack vector

Unauthenticated web access via less-than-sign login input

Published Jun 4, 2025 · Updated Jun 4, 2025

Improper authentication in WF Steuerungstechnik GmbH airleader MASTER 3.00571 allows remote attackers to bypass the web login. The login form accepts a less-than sign as input and treats it as sufficient to pass the password-protected authentication gate. No credentials or user interaction are required, and successful exploitation grants access to the protected compressor-control web interface.

CVSS severity10.0
Critical
EPSS probability0.41%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper authentication in WF Steuerungstechnik GmbH airleader MASTER 3.00571 allows remote attackers to bypass the web login. The login form accepts a less-than sign as input and treats it as sufficient to pass the password-protected authentication gate. No credentials or user interaction are required, and successful exploitation grants access to the protected compressor-control web interface.

The record

CVE
CVE-2025-5597
Published
Jun 4, 2025
Updated
Jun 4, 2025
Vendor
WF Steuerungstechnik GmbH
Product
airleader MASTER
Classifications
CWE-287, CAPEC-115, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 4, 2025CVE publishedPublication date reported by the CVE source.
  2. Jun 4, 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=3.00571

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

WF Steuerungstechnik GmbH · airleader MASTERversion=3.00571

Published CVSS scores

10.0NCSC.chCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA: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 exploitPublished

Weakness, pattern, technique

CWE-287Improper Authentication
CAPEC-115Authentication Bypass
T1190Exploit Public-Facing Application

Public exploit references

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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