How severe is CVE-2020-5808?

CVE-2020-5808 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-2020-5808 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (62nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-5808?

CVE-2020-5808 affects Tenable Tenable.sc. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-5808?

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-2020-5808 published?

CVE-2020-5808 was published on 2020-12-21 and last updated on 2026-06-17.

CVE-2020-5808

CVE-2020-5808 is a high-severity vulnerability in Tenable Tenable.sc 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.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 1% (62nd percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Tenable Tenable.sc
Published: 2020-12-21
Last modified: 2026-06-17

Description

In certain scenarios in Tenable.sc prior to 5.17.0, a scanner could potentially be used outside the user's defined scan zone without a particular zone being specified within the Automatic Distribution configuration.

Frequently asked questions

What is CVE-2020-5808?: In certain scenarios in Tenable.sc prior to 5.17.0, a scanner could potentially be used outside the user's defined scan zone without a particular zone being specified within the Automatic Distribution configuration.
How severe is CVE-2020-5808?: CVE-2020-5808 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-2020-5808 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (62nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-5808?: CVE-2020-5808 affects Tenable Tenable.sc. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-5808?: 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-2020-5808 published?: CVE-2020-5808 was published on 2020-12-21 and last updated on 2026-06-17.

References

https://www.tenable.com/security/tns-2020-11

Affected products (1)

cpe:2.3:a:tenable:tenable.sc:*:*:*:*:*:*:*:*

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