CVE-2025-3621

Unauthenticated code execution through local web server

Published Jul 15, 2025 · Updated Jul 15, 2025

Remote code inclusion in ProTNS ActADUR 2.0.1.9 allows remote attackers on an adjacent network to execute code through its local web server. The vendor and CNA identify command injection, hard-coded credentials, improper authentication, and unrestricted address binding, but disclose no endpoint, parameter, or code path. An unauthenticated attacker must reach the Windows host's adjacent network; successful exploitation executes code with the local server's privileges.

CVSS severity9.4
Critical
EPSS probability0.81%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Remote code inclusion in ProTNS ActADUR 2.0.1.9 allows remote attackers on an adjacent network to execute code through its local web server. The vendor and CNA identify command injection, hard-coded credentials, improper authentication, and unrestricted address binding, but disclose no endpoint, parameter, or code path. An unauthenticated attacker must reach the Windows host's adjacent network; successful exploitation executes code with the local server's privileges.

The record

CVE
CVE-2025-3621
Published
Jul 15, 2025
Updated
Jul 15, 2025
Vendor
ProTNS
Product
ActADUR
Classifications
CWE-1327, CWE-77, CWE-287, CWE-798, CAPEC-253, T1059
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 15, 2025CVE publishedPublication date reported by the CVE source.
  2. Jul 15, 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=v2.0.1.9 <v2.0.2.0

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

ProTNS · ActADURversion=v2.0.1.9 <v2.0.2.0

Published CVSS scores

9.6FSICVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:L
9.4FSICVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:L/SC:H/SI:H/SA: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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-1327Binding to an Unrestricted IP Address
CWE-77Improper Neutralization of Special Elements used in a Command ('Command Injection')
CWE-287Improper Authentication
CWE-798Use of Hard-coded Credentials
CAPEC-253Remote Code Inclusion
T1059Command and Scripting Interpreter

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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