CVE-2025-52835Network attack vectorHinoki check available

Web-shell upload via forged administrator request

Published Dec 30, 2025 · Updated Dec 30, 2025

CSRF in ConoHa by GMO WING Website Migrator 1.2.0 and earlier allows remote attackers to upload a web shell via forged requests. An affected function accepts a state-changing request without correct WordPress nonce validation; published records do not name the function or parameter. Exploitation requires an authenticated site administrator to open an attacker-controlled link or page, after which the uploaded shell enables server-side code execution.

CVSS severity9.6
Critical
EPSS probability0.20%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

CSRF in ConoHa by GMO WING Website Migrator 1.2.0 and earlier allows remote attackers to upload a web shell via forged requests. An affected function accepts a state-changing request without correct WordPress nonce validation; published records do not name the function or parameter. Exploitation requires an authenticated site administrator to open an attacker-controlled link or page, after which the uploaded shell enables server-side code execution.

The record

CVE
CVE-2025-52835
Published
Dec 30, 2025
Updated
Dec 30, 2025
Vendor
GMO Internet Group, Inc.
Product
WING Website Migrator
Classifications
CWE-352, CAPEC-650, T1204.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 30, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 30, 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=n/a <=1.1.9

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

GMO Internet Group, Inc. · WING Website Migratorversion=n/a <=1.1.9

Published CVSS scores

4.3WordfenceCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
9.6PatchstackCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/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-352Cross-Site Request Forgery (CSRF)
CAPEC-650Upload a Web Shell to a Web Server
T1204.001User Execution: Malicious Link

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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