CVE-2025-0364Public exploitNetwork attack vector

Unauthenticated code execution via SaaS registration

Published Feb 4, 2025 · Updated May 14, 2026

Authentication bypass in BigAntSoft BigAnt Server 5.6.06 and earlier allows remote attackers to execute arbitrary PHP code. The default-exposed SaaS registration flow creates an attacker-controlled organization and administrative account, and the Cloud Storage Addin accepts PHP files into a web-accessible data path. Remote attackers must solve the registration CAPTCHA; triggering the uploaded file then runs code as the Windows SYSTEM account.

CVSS severity9.8
Critical
EPSS probability1.93%
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 BigAntSoft BigAnt Server 5.6.06 and earlier allows remote attackers to execute arbitrary PHP code. The default-exposed SaaS registration flow creates an attacker-controlled organization and administrative account, and the Cloud Storage Addin accepts PHP files into a web-accessible data path. Remote attackers must solve the registration CAPTCHA; triggering the uploaded file then runs code as the Windows SYSTEM account.

The record

CVE
CVE-2025-0364
Published
Feb 4, 2025
Updated
May 14, 2026
Vendor
BigAntSoft
Product
BigAnt Server
Classifications
CWE-288, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 4, 2025CVE publishedPublication date reported by the CVE source.
  2. May 14, 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=0 <=5.6.06

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

BigAntSoft · BigAnt Serverversion=0 <=5.6.06

Published CVSS scores

9.8VulnCheckCVSS: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 exploitPublished

Weakness, pattern, technique

CWE-288Authentication Bypass Using an Alternate Path or Channel
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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