Vulnerability · Published Aug 26, 2026 · Assigned by twcert
CVE-2026-80235Thinking Software Technology｜EFence - Arbitrary File Upload
Critical 9.8
In plain English
A critical-severity unrestricted file upload in EFence from Thinking Software Technology. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.9% (higher than 60% of all known vulnerabilities).
Severity (CVSS 3.1)9.8Critical
Exploit odds (30 days)0.9%top 40.3% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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 (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Thinking Software Technology | EFence | 0 – through 1.2.66 DB Ver:56 |
Weakness: CWE-434 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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