CVE-2025-26860

Arbitrary code execution via insecure DLL loading

Published Oct 15, 2025 · Updated Oct 15, 2025

Uncontrolled DLL search in RSUPPORT RemoteCall before 5.1.0 allows local users to execute arbitrary code when an operator starts the program. The operator program loads a crafted DLL placed beside its executable because the DLL search path is not constrained to trusted locations. Exploitation requires write access to that folder and user interaction that starts the program, after which the DLL runs in the operator's context.

CVSS severity8.5
High
EPSS probability0.17%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Uncontrolled DLL search in RSUPPORT RemoteCall before 5.1.0 allows local users to execute arbitrary code when an operator starts the program. The operator program loads a crafted DLL placed beside its executable because the DLL search path is not constrained to trusted locations. Exploitation requires write access to that folder and user interaction that starts the program, after which the DLL runs in the operator's context.

The record

CVE
CVE-2025-26860
Published
Oct 15, 2025
Updated
Oct 15, 2025
Vendor
RSUPPORT Co., Ltd.
Product
RemoteCall
Classifications
CWE-427, T1574.001
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 15, 2025CVE publishedPublication date reported by the CVE source.
  2. Oct 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=prior to 5.1.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

RSUPPORT Co., Ltd. · RemoteCallversion=prior to 5.1.0

Published CVSS scores

7.8JPCERT/CCCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
8.5JPCERT/CCCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

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)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-427Uncontrolled Search Path Element
T1574.001DLL Search Order Hijacking

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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