Medium severity · published Jul 31, 2026
CVE-2026-43833
A stack-based buffer overflow vulnerability in the upload functionality could allow an authenticated attacker to achieve code execution
5.3
CVSS
0.5%
EPSS
No
On KEV
Description
A stack-based buffer overflow vulnerability in the upload functionality could allow an authenticated attacker to achieve code execution.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
Low
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 42% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AD
ADAM-3600 · Advantech
prior to version 2.8.5.0 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-43833
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-43833
www.advantech.com
https://www.advantech.com/en/security-advisory
www.csa.gov.sg
https://www.csa.gov.sg/alerts-and-advisories/alerts/al-2026-149
github.com
https://github.com/CVEProject/cvelistV5/blob/8846a06bd73fefb0d7b7e205f1e21f97d0b9cbe2/cves/2026/43xxx/CVE-2026-43833.json
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