How severe is CVE-2026-19639?

CVE-2026-19639 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2026-19639 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (23rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-19639?

CVE-2026-19639 affects Tenable Security Center. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-19639?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2026-19639 published?

CVE-2026-19639 was published on 2026-08-14 and last updated on 2026-08-19.

CVE-2026-19639

CVE-2026-19639 is a medium-severity vulnerability in Tenable Security Center with a CVSS 3.x base score of 4.3. 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-1284.

Key facts

Severity: Medium (CVSS 3.x base score 4.3)
CVSS v4: 5.3
EPSS exploit prediction: 0% (23rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-1284
Affected product: Tenable Security Center
Published: 2026-08-14
Last modified: 2026-08-19

Description

An improper access control vulnerability exists where an authenticated non-administrative application user could potentially view settings outside of their assigned scope.

Frequently asked questions

What is CVE-2026-19639?: An improper access control vulnerability exists where an authenticated non-administrative application user could potentially view settings outside of their assigned scope.
How severe is CVE-2026-19639?: CVE-2026-19639 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2026-19639 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (23rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-19639?: CVE-2026-19639 affects Tenable Security Center. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-19639?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2026-19639 published?: CVE-2026-19639 was published on 2026-08-14 and last updated on 2026-08-19.

References

https://www.tenable.com/security/tns-2026-22

Affected products (1)

cpe:2.3:a:tenable:security_center:*:*:*:*:*:*:*:*

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