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CVE-2026-89082 – Remote Code Execution / Elevation of Privilege / Arbitrary File Write – HP Advance

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Summary

CVE-2026-89082 is a critical code-injection vulnerability (CWE-94: Improper Control of Generation of Code) affecting HP Advance server software. HP states the flaw "may enable elevation of privilege, remote code execution, or arbitrary file write under certain conditions," directly impacting the server hosting the HP Advance software. The issue carries a CVSS v4.0 base score of 9.3 (Critical) and is exploitable over the network without authentication or user interaction.

Technical details

  • Root cause: Improper control of code generation (CWE-94) within HP Advance components, allowing injected code to be executed by the underlying server process.
  • Trigger conditions: No special preconditions are required by an attacker beyond network reachability to a vulnerable HP Advance server; HP describes exploitation as possible "under certain conditions."
  • Attack vector: Network-based (AV:N), low attack complexity, no privileges required, and no user interaction needed (per the CVSS v4.0 vector).
  • Impact: Successful exploitation can result in remote code execution, elevation of privilege, and/or arbitrary file write on the HP Advance server, with high impact to confidentiality, integrity, and availability of the affected host.

Affected software

  • HP AC Print & Scan: versions prior to V1R4.0.027
  • HP Output Central: versions prior to V1R4.0.029

Severity

  • CVSS v4.0 Base Score: 9.3 (Critical)
  • Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Mitigation and recommended actions

  • Immediate: Upgrade HP AC Print & Scan to version V1R4.0.027 or later, and upgrade HP Output Central to version V1R4.0.029 or later, as published in HP’s security bulletin.
  • If immediate patching is not possible: Restrict network access to HP Advance servers (e.g., via firewall rules or network segmentation) to trusted management networks only, since the vulnerability is remotely exploitable without authentication. Monitor HP Advance server hosts for unexpected process execution or unauthorized file writes until patches can be applied.

References

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