Security readout for executives and security teams
Plain-English summary
RVTools 4.0.6 could store vSphere passwords in a way that can be reversed because the encryption used fixed secrets. If someone gets the RVTools configuration files or binaries, they may be able to recover credentials for vSphere environments. The sources do not provide a CVSS score or confirmed patch details.
Executive priority
Prioritize this where RVTools manages production vSphere environments or where configuration files may be broadly accessible. The business risk is credential recovery leading to virtualization management access, but the sources do not confirm active exploitation.
Technical view
The CVE describes RVToolsPasswordEncryption.exe using a static IV and key for encrypted configuration passwords. The RVTools.exe Decrypt() method in VISKD.cs can decrypt those values. The exposed accounts are stated to have vSphere access, making configuration file access the key exposure path.
Likely exposure
Organizations are mainly exposed where RVTools 4.0.6 configuration files contain encrypted vSphere passwords and are readable by users, administrators, backups, or tooling beyond the intended operators.
Exploitation context
The CVE is not listed as KEV in the provided bundle, and no cited source confirms active exploitation. A public GitHub reference exists, but the bundle does not establish real-world exploitation or weaponization.
Researcher notes
Evidence is specific about the cryptographic design flaw but incomplete on CVSS, CWE, affected range beyond 4.0.6, and remediation. Validate exposure through configuration handling and credential scope, not by assuming internet-facing exploitability.
Mitigation direction
- Check RVTools vendor guidance for fixed versions or official mitigations.
- Avoid storing reusable vSphere credentials in RVTools configuration files.
- Rotate vSphere credentials stored in potentially exposed RVTools configs.
- Restrict filesystem and backup access to RVTools configuration files.
- Use least-privilege vSphere accounts for RVTools access.
Validation and detection
- Inventory systems running RVTools 4.0.6.
- Find RVTools configuration files containing encrypted passwords.
- Identify which vSphere accounts are stored in those files.
- Review who can read local, shared, and backed-up configs.
- Check vSphere logs for unexpected access by those accounts.
- Confirm current RVTools guidance from the vendor site.
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.
CVE-2020-27688 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
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
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 and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://www.robware.net/rvtools/CVE reference · x_refsource_MISC
- https://github.com/matthiasmaes/CVE-2020-27688CVE 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.