Security readout for executives and security teams
Plain-English summary
This flaw could let a logged-in remote user read sensitive files from the Quan-Fang-Wei-Tong-Xun system by abusing a URL parameter. It is not rated critical because authentication is required and the issue is limited to confidentiality, but exposed installations could leak configuration or other sensitive data.
Executive priority
Treat as a targeted data exposure risk. Prioritize confirmation of affected deployments and access restrictions, then follow vendor or TWCERT remediation guidance when available.
Technical view
CVE-2021-30173 is a local file inclusion/path traversal issue in Jun-He Technology Ltd. Quan-Fang-Wei-Tong-Xun system version 2007.2103. A remote authenticated attacker can inject an absolute path into the Url parameter and access arbitrary files. CVSS 3.1 is 6.5, with high confidentiality impact only.
Likely exposure
Exposure is limited to organizations running Jun-He Technology Ltd. Quan-Fang-Wei-Tong-Xun system version 2007.2103, especially where authenticated web access is reachable from untrusted networks.
Exploitation context
The source bundle does not show CISA KEV listing or cited evidence of active exploitation. The vulnerability is remotely reachable after authentication and requires low attack complexity, so compromised or low-privilege accounts could raise data exposure risk.
Researcher notes
Evidence is limited to the CVE record, CVE List entry, and TWCERT reference. No patch details, exploit publication, or active exploitation evidence are included in the provided bundle.
Mitigation direction
- Identify any Quan-Fang-Wei-Tong-Xun 2007.2103 deployments.
- Check Jun-He or TWCERT guidance for vendor-approved fixes or upgrades.
- Restrict access to the application to trusted networks and users.
- Review account hygiene for users with access to the system.
- Monitor application logs for suspicious Url parameter file path usage.
Validation and detection
- Confirm product name and version from asset inventory or system administration records.
- Verify whether the authenticated web interface is internet-facing.
- Review logs for Url parameter values containing absolute file paths.
- Check whether sensitive configuration files are readable by the application process.
- Document compensating controls if no vendor patch information is available.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
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CWE-36: Exact CWE lookup
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Open ATT&CK lookupFile access behavior lookup
The CVE wording references file access or upload behavior, so file telemetry and web shell review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2021-30173 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Medium
- CVSS
- 6.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N2.83.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
6.5MediumVector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://www.twcert.org.tw/tw/cp-132-4712-7ade4-1.htmlCVE reference · x_refsource_MISC
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Absolute Path Traversal
Absolute Path Traversal represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.