CVE-2020-27688

Name: CVE-2020-27688
Creator: NVD / NIST
Published: 2020-11-05T15:15:35.843+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 1.92%

Last modified Jun 17, 2026

CVE-2020-27688 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. RVToolsPasswordEncryption.exe in RVTools 4.0.6 allows users to encrypt passwords to be used in the configuration files. This encryption used a static IV and key, and thus using the Decrypt() method from VISKD.cs from the RVTools.exe executable allows for decrypting the encrypted passwords. EPSS estimates a 1.92% chance of exploitation in the next 30 days.

Description

RVToolsPasswordEncryption.exe in RVTools 4.0.6 allows users to encrypt passwords to be used in the configuration files. This encryption used a static IV and key, and thus using the Decrypt() method from VISKD.cs from the RVTools.exe executable allows for decrypting the encrypted passwords. The accounts used in the configuration files have access to vSphere instances.

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS Probability

1.92%

77.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-522

Affected Software

Vendor	Product	Versions
Robware	Rvtools	4.0.6

References

https://github.com/matthiasmaes/CVE-2020-27688Third Party Advisory
https://www.robware.net/rvtools/Product, Vendor Advisory
https://github.com/matthiasmaes/CVE-2020-27688Third Party Advisory
https://www.robware.net/rvtools/Product, Vendor Advisory

Timeline

Published: Nov 5, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-27688?

How severe is CVE-2020-27688?

CVE-2020-27688 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.92% probability of exploitation in the next 30 days.

How do I fix CVE-2020-27688?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-27688?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST