How severe is CVE-2026-64877?

CVE-2026-64877 has a CVSS 3.x base score of 8.4, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2026-64877 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (9th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-64877?

CVE-2026-64877 affects Tenable Security Center. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-64877?

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-2026-64877 published?

CVE-2026-64877 was published on 2026-07-21 and last updated on 2026-08-18.

CVE-2026-64877

CVE-2026-64877 is a high-severity vulnerability in Tenable Security Center with a CVSS 3.x base score of 8.4. 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-20.

Key facts

Severity: High (CVSS 3.x base score 8.4)
CVSS v4: 9.4
EPSS exploit prediction: 0% (9th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Tenable Security Center
Published: 2026-07-21
Last modified: 2026-08-18

Description

An authenticated non-admin user can exploit a SQL injection flaw in the ticketing REST API to access sensitive data stored in the appliance database.

Frequently asked questions

What is CVE-2026-64877?: An authenticated non-admin user can exploit a SQL injection flaw in the ticketing REST API to access sensitive data stored in the appliance database.
How severe is CVE-2026-64877?: CVE-2026-64877 has a CVSS 3.x base score of 8.4, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2026-64877 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (9th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-64877?: CVE-2026-64877 affects Tenable Security Center. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-64877?: 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-2026-64877 published?: CVE-2026-64877 was published on 2026-07-21 and last updated on 2026-08-18.

References

https://www.tenable.com/security/tns-2026-19

Affected products (1)

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

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