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Official DMS CVE-2026-74845

| EUVDEUVD-2026-60077 HIGH
Unrestricted Upload of File with Dangerous Type (CWE-434)
2026-08-17 twcert GHSA-fw5p-7qj4-6x7r
8.7
CVSS 4.0 · Vendor: twcert
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Severity by source

Vendor (twcert) PRIMARY
8.7 HIGH
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
vuln.today AI
8.8 HIGH

Network-accessible upload requires only a low-privileged account; no scope change as impact is confined to the vulnerable server itself.

3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
4.0 AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Primary rating from Vendor (twcert).

CVSS VectorVendor: 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
X

Lifecycle Timeline

3
Analysis Generated
Aug 17, 2026 - 12:42 vuln.today
Patch available
Aug 17, 2026 - 11:16 EUVD
CVE Published
Aug 17, 2026 - 09:53 cve.org
HIGH 8.7

DescriptionCVE.org

Official Document Management System developed by 2100 Technology has an Arbitrary File Upload vulnerability, allowing authenticated remote attackers to upload and execute web shell backdoors, thereby enabling arbitrary code execution on the server.

AnalysisAI

Arbitrary file upload in 2100 Technology's Official Document Management System (all versions before 5.0.105) enables authenticated remote attackers to upload and execute web shell backdoors, achieving full arbitrary code execution on the underlying server. The CVSS 4.0 vector (AV:N/AC:L/AT:N/PR:L) confirms network-accessible exploitation requiring only a low-privileged account, with total impact across confidentiality, integrity, and availability. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
Obtain valid user credentials
Delivery
Authenticate to DMS web portal
Exploit
Upload web shell via document upload feature
Execution
Request shell URL via HTTP to trigger execution
Persist
Execute arbitrary OS commands on server
Impact
Achieve full server compromise

Vulnerability AssessmentAI

Exploitation Exploitation requires a valid authenticated account in the Official Document Management System (PR:L per CVSS 4.0 vector) - anonymous or unauthenticated exploitation is not possible. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 4.0 score of 8.7 with total VC/VI/VA impact accurately reflects the severity of post-exploitation access, but several signals moderate the realistic threat level. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario An attacker with a valid low-privileged account authenticates to the document management portal and uses the document upload feature to submit a file with a web shell payload (e.g., a PHP file named with a permitted extension or no extension validation in place). The server stores the file in a web-accessible path and the attacker retrieves it via a direct HTTP request, triggering server-side execution of the shell and gaining interactive OS-level command access. …
Remediation The primary remediation is to upgrade to Official Document Management System version 5.0.105 or later, which includes the vendor-released fix per the TWCERT advisories at https://www.twcert.org.tw/tw/cp-132-11108-7b14c-1.html and https://www.twcert.org.tw/en/cp-139-11109-82377-2.html. … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

Within 24 hours, conduct a complete inventory of all 2100 Technology Document Management System deployments and document their current versions to identify affected instances. …

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Threat intelligence, references, and detailed analysis are available after sign-in.

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CVE-2026-74845 vulnerability details – vuln.today

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