CVE-2026-91106 HP Inc. CVE debrief

Who should care

Defenders and administrators responsible for HP Linux Imaging and Printing (HPLIP) systems, especially those exposed to remote access or printing services, should assess exposure and prioritize patching.

Why it matters

CVE-2026-91106 involves multiple vulnerabilities in HP's Linux Imaging and Printing (HPLIP) software that could lead to remote code execution, privilege escalation, denial of service, information disclosure, or unauthorized file modification. Defenders should prioritize patching, especially in exposed environments, and implement compensating controls to mitigate potential impacts.

• Remote code execution could allow attackers to gain unauthorized access and control over affected systems.
• Privilege escalation could enable attackers to perform actions with elevated privileges.
• Denial of service could disrupt printing and scanning services, impacting business operations.
• Information disclosure could expose sensitive data, such as print jobs or scanned documents.

Technical summary

Multiple externally reported vulnerabilities within HPLIP could potentially enable remote code execution, privilege escalation, denial of service, information disclosure, or unauthorized file modification under certain conditions. These vulnerabilities affect several software components of HPLIP, and defenders should prioritize verifying and applying patches for HPLIP, especially in environments where remote access or printing services are exposed. It is crucial to review and update inventory to identify and prioritize systems using HPLIP and implement compensating controls to mitigate potential impacts.

Defensive priority

Defenders should prioritize verifying and applying patches for HPLIP, especially in environments where remote access or printing services are exposed.

Recommended defensive actions

• Verify and apply the latest patches for HPLIP from the official HP support page.
• Review and update inventory to identify and prioritize systems using HPLIP.
• Implement compensating controls such as network segmentation or access restrictions for printing services.
• Monitor for and respond to potential exploitation attempts targeting HPLIP.
• Conduct a thorough review of HPLIP configurations and ensure they align with organizational security policies.
• Engage with HP support for additional guidance on patching and mitigation strategies.
• Perform regular security audits to identify and address potential vulnerabilities in HPLIP and other software components.

Evidence notes

The CVE record and NVD entry provide details on multiple externally reported vulnerabilities within HPLIP that could enable remote code execution, privilege escalation, denial of service, information disclosure, or unauthorized file modification.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.