How severe is CVE-2020-27688?

CVE-2020-27688 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2020-27688 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (77th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-27688?

CVE-2020-27688 affects Robware Rvtools. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-27688?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2020-27688 published?

CVE-2020-27688 was published on 2020-11-05 and last updated on 2026-06-17.

CVE-2020-27688

CVE-2020-27688 is a high-severity vulnerability in Robware Rvtools with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-522.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 2% (77th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-522
Affected product: Robware Rvtools
Published: 2020-11-05
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2020-27688?: 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.
How severe is CVE-2020-27688?: CVE-2020-27688 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2020-27688 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (77th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-27688?: CVE-2020-27688 affects Robware Rvtools. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-27688?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2020-27688 published?: CVE-2020-27688 was published on 2020-11-05 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:robware:rvtools:4.0.6:*:*:*:*:*:*:*

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