How severe is CVE-2026-91099?

CVE-2026-91099 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-2026-91099 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (61st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-91099?

CVE-2026-91099 affects Hp Linux Imaging And Printing. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-91099?

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.

When was CVE-2026-91099 published?

CVE-2026-91099 was published on 2026-09-16 and last updated on 2026-09-21.

CVE-2026-91099

CVE-2026-91099 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-61.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v4: 5.1
EPSS exploit prediction: 1% (61st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-61
Affected product: Hp Linux Imaging And Printing
Published: 2026-09-16
Last modified: 2026-09-21

Description

HP has identified and remediated multiple externally reported vulnerabilities within HPLIP. The findings affect several software components that could potentially enable remote code execution, privilege escalation, denial of service, information disclosure, or unauthorized file modification under certain conditions.

Frequently asked questions

What is CVE-2026-91099?: HP has identified and remediated multiple externally reported vulnerabilities within HPLIP. The findings affect several software components that could potentially enable remote code execution, privilege escalation, denial of service, information disclosure, or unauthorized file modification under certain conditions.
How severe is CVE-2026-91099?: CVE-2026-91099 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-2026-91099 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (61st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-91099?: CVE-2026-91099 affects Hp Linux Imaging And Printing. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-91099?: 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.
When was CVE-2026-91099 published?: CVE-2026-91099 was published on 2026-09-16 and last updated on 2026-09-21.

References

https://support.hp.com/us-en/document/ish_15646959-15646984-16/hpsbpi04151

Affected products (1)

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

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