CVE-2025-53970Network attack vector

SYSTEM command execution via unrestricted file upload

Published Aug 28, 2025 · Updated Aug 28, 2025

Unrestricted file upload in DOS SS1 and SS1 Cloud allows remote attackers to execute OS commands with SYSTEM privileges on Windows. The affected Windows agent accepts an arbitrary dangerous file through an undisclosed network interface, after which the file can trigger command execution. No credentials or user interaction are required, and successful exploitation runs commands as the Windows SYSTEM account.

CVSS severity9.8
Critical
EPSS probability0.53%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Unrestricted file upload in DOS SS1 and SS1 Cloud allows remote attackers to execute OS commands with SYSTEM privileges on Windows. The affected Windows agent accepts an arbitrary dangerous file through an undisclosed network interface, after which the file can trigger command execution. No credentials or user interaction are required, and successful exploitation runs commands as the Windows SYSTEM account.

The record

CVE
CVE-2025-53970
Published
Aug 28, 2025
Updated
Aug 28, 2025
Vendor
DOS Co., Ltd.
Product
SS1 Cloud
Classifications
CWE-434, T1210
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 28, 2025CVE publishedPublication date reported by the CVE source.
  2. Aug 28, 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=Ver.2.1.3 and earlier (Affected under Windows environment only)

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

DOS Co., Ltd. · SS1 Cloudversion=Ver.2.1.3 and earlier (Affected under Windows environment only)
DOS Co., Ltd. · SS1version=Ver.16.0.0.10 and earlier (Media version:16.0.0a and earlier) (Affected under Windows environment only)

Published CVSS scores

9.3JPCERT/CCCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
9.8JPCERT/CCCVSS:3.0/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.

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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-434Unrestricted Upload of File with Dangerous Type
T1210Exploitation of Remote Services

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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