CVE-2026-43833

Stack-Based Buffer Overflow in Upload Functionality Allowing Authenticated Code Execution

Published Jul 31, 2026 CVSS 4.0 · 7.5 High EPSS < 1% KEV · Not listed
Description
A stack-based buffer overflow vulnerability in the upload functionality could allow an authenticated attacker to achieve code execution.

Remediation

Vendor Solution

Advantech has released a security update to address these vulnerabilities. Users and administrators of affected product versions are advised to update to the latest version immediately.

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Title Pending Vendor Disclosure: Unspecified Vulnerability Stack-Based Buffer Overflow in Upload Functionality Allowing Authenticated Code Execution
Weaknesses CWE-121
Type Values Removed Values Added
Description Full details and mitigation steps are currently restricted and will be published at a later date. A stack-based buffer overflow vulnerability in the upload functionality could allow an authenticated attacker to achieve code execution.
Title tbc Pending Vendor Disclosure: Unspecified Vulnerability
References
Metrics cvssV4_0

{'score': 7.5, 'vector': 'CVSS:4.0/AV:N/AC:H/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Weaknesses CWE-200
Type Values Removed Values Added
First Time appeared Advantech
Advantech adam-3600
Vendors & Products Advantech
Advantech adam-3600
Type Values Removed Values Added
Weaknesses CWE-200
Type Values Removed Values Added
Description Successful exploitation of the vulnerability could allow an authenticated attacker to exploit a stack-based buffer overflow in the upload functionality to conduct code execution. Full details and mitigation steps are currently restricted and will be published at a later date.
Title Stack-based Buffer Overflow Vulnerability tbc
References
Metrics cvssV4_0

{'score': 7.5, 'vector': 'CVSS:4.0/AV:N/AC:H/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}

Type Values Removed Values Added
Description Successful exploitation of the vulnerability could allow an authenticated attacker to exploit a stack-based buffer overflow in the upload functionality to conduct code execution.
Title Stack-based Buffer Overflow Vulnerability
References
Metrics cvssV4_0

{'score': 7.5, 'vector': 'CVSS:4.0/AV:N/AC:H/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
CSA
Published
Updated
Oct 20, 2026, 7:54 AM
Reserved
May 4, 2026, 3:13 AM
Status
Deferred
Published
Jul 31, 2026, 4:17 AM
Modified
Oct 20, 2026, 8:16 AM