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CVE-2021-42839

Grand Vice info Co. webopac7 - Arbitrary File Upload

HIGH
8.8
CVSS Score
Published: November 15, 2021 at 09:30 AM UTC
Updated: June 17, 2026 at 04:10 AM UTC
2 products affected across 2 vendorsWebopacWebopac

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Severity
HIGH8.8
Exploit prediction
EPSS 2%

Description

Grand Vice info Co. webopac7 file upload function fails to filter special characters. While logging in with general user’s permission, remote attackers can upload malicious script and execute arbitrary code to control the system or interrupt services.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

x_refsource_MISCThird Party Advisory
Source: [email protected]
https://www.twcert.org.tw/tw/cp-132-5288-9d546-1.html

CVSS

8.8HIGHtwcert
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-434

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