How severe is CVE-2026-4667?

CVE-2026-4667 has a CVSS 4.0 base score of 7.3, rated high severity.

Is CVE-2026-4667 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (1st percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-4667?

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-2026-4667 have an EU (EUVD) identifier?

Yes. CVE-2026-4667 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-22947.

When was CVE-2026-4667 published?

CVE-2026-4667 was published on 2026-04-15 and last updated on 2026-06-17.

CVE-2026-4667

CVE-2026-4667 is a high-severity vulnerability with a CVSS 4.0 base score of 7.3. 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-250.

Key facts

Severity: High (CVSS 4.0 base score 7.3)
EPSS exploit prediction: 0% (1st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-22947
Weakness: CWE-250
Published: 2026-04-15
Last modified: 2026-06-17

Description

HP System Optimizer might potentially be vulnerable to escalation of privilege. HP is releasing an update to mitigate this potential vulnerability.

Frequently asked questions

What is CVE-2026-4667?: HP System Optimizer might potentially be vulnerable to escalation of privilege. HP is releasing an update to mitigate this potential vulnerability.
How severe is CVE-2026-4667?: CVE-2026-4667 has a CVSS 4.0 base score of 7.3, rated high severity.
Is CVE-2026-4667 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (1st percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-4667?: 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-2026-4667 have an EU (EUVD) identifier?: Yes. CVE-2026-4667 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-22947.
When was CVE-2026-4667 published?: CVE-2026-4667 was published on 2026-04-15 and last updated on 2026-06-17.

References

https://support.hp.com/us-en/document/ish_14747002-14747024-16/hpsbgn04101

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