Arbitrary File Upload Vulnerability in EFence by Thinking Software Technology
CVE-2026-80237

8.7HIGH

Key Information:

Vendor

Thinking Software Technology

Status
Efence
Vendor
CVE Published:
26 August 2026

What is CVE-2026-80237?

EFence, a product developed by Thinking Software Technology, is affected by an arbitrary file upload vulnerability. This flaw allows authenticated remote attackers to upload malicious files, which can lead to the execution of web shell backdoors and subsequent arbitrary code execution on the server. Organizations using this product should take immediate steps to mitigate the risk and secure their systems.

Affected Version(s)

Efence 0 <= 1.2.66 DB Ver:56

References

https://www.twcert.org.tw/tw/cp-132-11133-e0167-1.html
third-party-advisory
https://www.twcert.org.tw/en/cp-139-11137-c6e5f-2.html
third-party-advisory

CVSS V4

Score:
8.7
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.