Security readout for executives and security teams
Plain-English summary
Older Raonwiz DEXT5Editor deployments could let an attacker bypass authentication through parameter manipulation, upload a file, and cause code execution. That can compromise the server running the editor. The issue is high severity, but the provided sources do not show confirmed active exploitation.
Executive priority
Prioritize remediation for internet-facing or externally reachable DEXT5Editor deployments. The business risk is server compromise, but current evidence does not prove active exploitation in the wild.
Technical view
CVE-2020-7864 is a CWE-434 file upload and execution flaw affecting Raonwiz DEXT5Editor versions before 3.5.1405747.1100.03. The CVSS 3.1 score is 7.8. The source description states parameter manipulation can bypass authentication and lead to remote code execution.
Likely exposure
Exposure is limited to systems using Raonwiz DEXT5Editor versions prior to 3.5.1405747.1100.03. The bundle does not identify affected platforms, default deployment paths, or CPEs, so asset discovery is required.
Exploitation context
The source bundle does not list this CVE in CISA KEV and does not cite active exploitation. Treat exploit status as unconfirmed from the provided evidence, while prioritizing remediation because the impact includes code execution.
Researcher notes
The available record is concise: affected product, pre-fixed version boundary, CWE-434, and CVSS vector are stated, but deployment details and exploit telemetry are not. Avoid assuming affected integrations beyond Raonwiz DEXT5Editor.
Mitigation direction
- Inventory web applications using Raonwiz DEXT5Editor.
- Upgrade DEXT5Editor to 3.5.1405747.1100.03 or later per vendor guidance.
- Review KRCERT and vendor advisories for deployment-specific instructions.
- Restrict access to editor upload functionality where business use permits.
- Monitor servers for unexpected uploaded files or code execution indicators.
Validation and detection
- Confirm the installed DEXT5Editor version on each application server.
- Verify no production instance remains below 3.5.1405747.1100.03.
- Check application logs for anomalous upload requests or authentication bypass patterns.
- Review web directories for unexpected executable or script files.
- Confirm upload endpoints require intended authentication and authorization controls.
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
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-434: File access and web shell behavior lookup
File traversal and upload weaknesses can lead teams to review file, web shell, execution, and collection telemetry. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
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-2020-7864 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
- High
- CVSS
- 7.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
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:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H1.85.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.8HighVector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://www.krcert.or.kr/krcert/secNoticeView.do?bulletin_writing_sequence=36085CVE 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.
Unrestricted Upload of File with Dangerous Type
Unrestricted Upload of File with Dangerous Type represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.