Vulnerability details

CVE-2026-80237

Thinking Software Technology Efence

Thinking Software Technology｜Efence - Arbitrary File Upload

CVSS 4.0

8.7High

Official description

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

CVSS scores

Score	Version	Source	Vector
8.7High	4.0	CVEProject cvelistV5 (CNA) (twcert)	`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`
8.8High	3.1	CVEProject cvelistV5 (CNA) (twcert)	`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`

Affected products

Vendor	Product	Versions	Source
Thinking Software Technology	Efence	v ≤ 1.2.66 DB Ver:56	CVEProject cvelistV5 (CNA)

References and advisories

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

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Details

Published: 2026-08-26
Last updated: 2026-08-26
State: Published
Assigner (CNA): twcert

Exploit prediction (EPSS)

0.78%

Probability of exploitation in 30 days

56.3%

Percentile (among all CVEs)

SSVC assessment (CISA)

Automatable: No
Exploitation: None
Technical impact: Total

Weaknesses (CWE)

CWE-434
Unrestricted Upload of File with Dangerous Type