How severe is CVE-2026-5373?

CVE-2026-5373 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2026-5373 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (13th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-5373?

CVE-2026-5373 affects Runzero Runzero Platform. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-5373?

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.

Does CVE-2026-5373 have an EU (EUVD) identifier?

Yes. CVE-2026-5373 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-19634.

When was CVE-2026-5373 published?

CVE-2026-5373 was published on 2026-04-07 and last updated on 2026-06-17.

CVE-2026-5373

CVE-2026-5373 is a high-severity vulnerability in Runzero Runzero Platform with a CVSS 3.x base score of 8.1. 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-269.

Key facts

Severity: High (CVSS 3.x base score 8.1)
EPSS exploit prediction: 0% (13th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-19634
Weakness: CWE-269
Affected product: Runzero Runzero Platform
Published: 2026-04-07
Last modified: 2026-06-17

Description

An issue that allowed all-organization administrators to promote accounts to superuser status has been resolved. This is an instance of CWE-269: Improper Privilege Management, and has an estimated CVSS score of CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:N (8.1 High). This issue was fixed in version 4.0.260202.0 of the runZero Platform.

Frequently asked questions

What is CVE-2026-5373?: An issue that allowed all-organization administrators to promote accounts to superuser status has been resolved. This is an instance of CWE-269: Improper Privilege Management, and has an estimated CVSS score of CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:N (8.1 High). This issue was fixed in version 4.0.260202.0 of the runZero Platform.
How severe is CVE-2026-5373?: CVE-2026-5373 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2026-5373 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (13th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-5373?: CVE-2026-5373 affects Runzero Runzero Platform. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-5373?: 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.
Does CVE-2026-5373 have an EU (EUVD) identifier?: Yes. CVE-2026-5373 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-19634.
When was CVE-2026-5373 published?: CVE-2026-5373 was published on 2026-04-07 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:runzero:runzero_platform:*:*:*:*:*:*:*:*

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