How severe is CVE-2026-8631?

CVE-2026-8631 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-8631 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (68th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-8631?

CVE-2026-8631 affects Hp Linux Imaging And Printing. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-8631?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2026-8631 have an EU (EUVD) identifier?

Yes. CVE-2026-8631 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-31193.

When was CVE-2026-8631 published?

CVE-2026-8631 was published on 2026-05-20 and last updated on 2026-06-30.

CVE-2026-8631

CVE-2026-8631 is a critical-severity vulnerability in Hp Linux Imaging And Printing with a CVSS 3.x base score of 9.8. 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-190.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v4: 9.3
EPSS exploit prediction: 1% (68th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-31193
Weakness: CWE-190
Affected product: Hp Linux Imaging And Printing
Published: 2026-05-20
Last modified: 2026-06-30

Description

A potential security vulnerability has been identified in the HP Linux Imaging and Printing Software. This potential vulnerability may allow escalation of privileges and/or arbitrary code execution via an integer overflow in the hpcups processing path when handling crafted print data.

Frequently asked questions

What is CVE-2026-8631?: A potential security vulnerability has been identified in the HP Linux Imaging and Printing Software. This potential vulnerability may allow escalation of privileges and/or arbitrary code execution via an integer overflow in the hpcups processing path when handling crafted print data.
How severe is CVE-2026-8631?: CVE-2026-8631 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-8631 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (68th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-8631?: CVE-2026-8631 affects Hp Linux Imaging And Printing. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-8631?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2026-8631 have an EU (EUVD) identifier?: Yes. CVE-2026-8631 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-31193.
When was CVE-2026-8631 published?: CVE-2026-8631 was published on 2026-05-20 and last updated on 2026-06-30.

References

Affected products (1)

cpe:2.3:a:hp:linux_imaging_and_printing:*:*:*:*:*:*:*:*

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