Security readout for executives and security teams
Plain-English summary
VISAM VBASE 11.6.0.6 Web Remote can expose folder and file directory listings to unauthenticated users. The main business risk is unintended disclosure of sensitive operational files, not system takeover based on the supplied evidence.
Executive priority
Prioritize verification for any internet-accessible or partner-accessible Web Remote deployment. The risk is sensitive information exposure from operational systems; remediation urgency depends on reachability and data sensitivity.
Technical view
CVE-2021-38417 is an improper access control issue in VISAM VBASE Pro-RT/Server-RT Web Remote version 11.6.0.6. The vulnerable web-remote endpoint may allow unauthenticated viewing of folders and files. CVSS 3.1 is 7.4 with network attack vector and high confidentiality impact.
Likely exposure
Exposure is likely limited to organizations running VISAM VBASE Pro-RT/Server-RT Web Remote version 11.6.0.6, especially where the Web Remote endpoint is reachable by untrusted networks or users.
Exploitation context
The supplied bundle does not show CISA KEV listing or active exploitation evidence. The issue is remotely reachable and unauthenticated, but the CVSS vector indicates user interaction is required. Treat internet exposure as urgent to verify.
Researcher notes
Evidence identifies CWE-284 improper access control and directory listing exposure through web-remote. The supplied sources do not name a patch version, detailed prerequisites, or exploitation in the wild. Avoid assuming broader VISAM product impact beyond the listed Web Remote version.
Mitigation direction
- Identify VISAM VBASE Web Remote installations and confirm product version.
- Check VISAM and CISA guidance for fixed versions or supported configuration changes.
- Restrict Web Remote access to trusted networks or VPN paths.
- Disable Web Remote where it is not operationally required.
- Monitor web access logs for unexpected directory browsing activity.
Validation and detection
- Inventory hosts running VISAM VBASE Pro-RT/Server-RT Web Remote.
- Confirm whether version 11.6.0.6 is present.
- Verify the web-remote endpoint is not reachable from untrusted networks.
- Validate unauthenticated users cannot view folder or file listings.
- Review recent logs for suspicious unauthenticated access patterns.
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-284: Authorization and privilege behavior lookup
Authorization weaknesses can support privilege escalation and valid-account review, depending on exploit path. 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 lookupCVE-2021-38417 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
- 7.4 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/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:N/UI:R/S:C/C:H/I:N/A:N2.84Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.4HighVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://www.cisa.gov/uscert/ics/advisories/icsa-21-308-01CVE reference · x_refsource_CONFIRM
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.
Improper Access Control
Improper Access Control represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.