CVE-2026-67248Network attack vector

Authenticated CGI crash via unchecked decoded input

Published Jul 30, 2026 · Updated Jul 30, 2026

Stack-based buffer overflow in ADM File Explorer allows remote authenticated users to crash its CGI process via a crafted network request. The request path decodes user-controlled input without adequate validation and copies the decoded data into a fixed-size stack buffer. Exploitation requires an authenticated ADM account; the documented consequence is interruption of the affected CGI process, while broader impact remains unconfirmed.

CVSS severity8.7
High
EPSS probability0.28%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack-based buffer overflow in ADM File Explorer allows remote authenticated users to crash its CGI process via a crafted network request. The request path decodes user-controlled input without adequate validation and copies the decoded data into a fixed-size stack buffer. Exploitation requires an authenticated ADM account; the documented consequence is interruption of the affected CGI process, while broader impact remains unconfirmed.

The record

CVE
CVE-2026-67248
Published
Jul 30, 2026
Updated
Jul 30, 2026
Vendor
ASUSTOR Inc.
Product
ASUSTOR Data Master
Classifications
CWE-121, T1499.004
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 30, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 30, 2026Record 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=4.1.0 <=4.3.3.RUN1
  2. Affected versionversion=5.0.0 <=5.1.3.RI81

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

ASUSTOR Inc. · ASUSTOR Data Masterversion=4.1.0 <=4.3.3.RUN1; version=5.0.0 <=5.1.3.RI81

Published CVSS scores

8.7ASUSTOR Inc.CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-121Stack-based Buffer Overflow
T1499.004Application or System Exploitation

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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