CVE-2026-80235: Thinking Software Technology｜EFence - Arbitrary File Upload

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.9% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-08-26 · updated 2026-09-03
Weakness: CWE-434

Description

EFence developed by Thinking Software Technology has an Arbitrary File Upload vulnerability. Unauthenticated remote attackers can upload and execute web shell backdoors, thereby enabling arbitrary code execution on the server.

Affected products

Thinking Software Technology Efence: through 1.2.66 DB Ver:56

References

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

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