CVE-2025-26692Network attack vector

SYSTEM code execution via upload path traversal

Published Apr 27, 2025 · Updated Apr 28, 2025

Path traversal in Quick Agent V2 before 2.9.8 and V3 before 3.2.1 allows remote attackers to execute code as Windows SYSTEM. The file-upload function fails to confine supplied pathnames to its intended directory, enabling uploaded content to escape the restricted location. Network access to that function and an unspecified attack condition are required; authentication and user interaction are not required.

CVSS severity9.2
Critical
EPSS probability0.86%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in Quick Agent V2 before 2.9.8 and V3 before 3.2.1 allows remote attackers to execute code as Windows SYSTEM. The file-upload function fails to confine supplied pathnames to its intended directory, enabling uploaded content to escape the restricted location. Network access to that function and an unspecified attack condition are required; authentication and user interaction are not required.

The record

CVE
CVE-2025-26692
Published
Apr 27, 2025
Updated
Apr 28, 2025
Vendor
SIOS Technology, Inc.
Product
Quick Agent
Classifications
CWE-22, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 27, 2025CVE publishedPublication date reported by the CVE source.
  2. Apr 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=prior to Ver2.9.8
  2. Affected versionversion=prior to Ver3.2.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

SIOS Technology, Inc. · Quick Agentversion=prior to Ver2.9.8; version=prior to Ver3.2.1

Published CVSS scores

9.2JPCERT/CCCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
8.1JPCERT/CCCVSS:3.0/AV:N/AC:H/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-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
T1190Exploit Public-Facing Application

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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