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HP One Agent EUVDEUVD-2026-109122

| CVE-2026-91093 HIGH
Uncontrolled Search Path Element (CWE-427)
2026-10-23 hp GHSA-2gq5-rcwh-3325
8.5
CVSS 4.0 · Vendor: hp
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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain

  1. Access
    Gain low-privileged local access
  2. Exploit
    Plant malicious file in agent's search path
  3. Execution
    HP One Agent loads attacker-controlled code
  4. Impact
    Execute code at elevated privilege

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A08:2025 - Software or Data Integrity Failures
ASVS 5.0
V13 - Configuration Search path element control
Exploitation Conditions

Requires the attacker to already have a low-privileged local account on an HP PC that has HP One Agent software installed (AV:L, PR:L, no user interaction). The weakness is CWE-427 (Uncontrolled Search Path Element), so exploitation depends on the attacker being able to place a malicious file in a location the agent searches when loading components; the exact trigger and the specific writable path are not described in the available sources. Limiting factors: exploitation is not possible remotely or without a prior local foothold, and it only affects systems where HP One Agent is deployed - machines without this agent are unaffected.

Impact

This is a genuine but access-gated risk rather than an internet-facing emergency. The vendor-supplied CVSS 4.0 vector (AV:L/AC:L/AT:N/PR:L/UI:N) and the CWE-427 (Uncontrolled Search Path Element) classification agree: exploitation is LOCAL, low-complexity, and requires the attacker to already hold low privileges on the machine (PR:L), with no user interaction. The high triad (VC:H/VI:H/VA:H, SC/SI/SA:N) reflects full compromise of the local system via privilege escalation, consistent with the stated 'escalation of privilege and/or arbitrary code execution.' The vuln.today decision label is 'this_week' - elevated but not act_now/emergency - which matches a local privilege-escalation flaw. No CISA KEV listing, no EPSS score, and no PoC/exploit reference were supplied, so exploitation status is 'no public exploit identified at time of analysis.' SIGNAL CONFLICT TO NOTE: the input Tags include 'RCE' (remote code execution), but the CVSS vector is AV:L and the description describes local privilege escalation; treat this as LOCAL arbitrary code execution, not network-reachable RCE. EPSS and KEV data are absent (not zero), so widespread-exploitation probability cannot be quantified from the provided data. Net: prioritize for HP-managed fleets within the vendor-suggested week, but it is not a remotely exploitable, mass-scannable issue.

Exploit ScenarioDerived

An attacker who already has a low-privileged foothold on an HP PC running HP One Agent abuses the uncontrolled search path (CWE-427) to have the agent load an attacker-supplied binary/library, executing code at the agent's elevated privilege level. No public exploit code was identified in the provided data, and because the CVSS vector is AV:L, this requires prior local access rather than remote delivery.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
Patch available 0.2% exploitation probability (EPSS)

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AnalysisAIv1 – Oct 23, 2026

Privilege escalation and possible arbitrary code execution in HP One Agent on certain HP PC products stem from an uncontrolled search path element (CWE-427), which lets a file planted in a location the agent searches be loaded in place of a legitimate component. The flaw is local, not remote: an attacker must already hold a low-privileged account on an HP PC where HP One Agent is installed, after which no user interaction is required and confidentiality, integrity and availability impacts are all rated high (CVSS 4.0 base 8.5; vendor-assessed CVSS 3.1 7.8). No public exploit code and no confirmed active exploitation were identified at time of analysis, and the priority label places it in this week's remediation queue rather than an emergency; HP has published advisory HPSBHF04150 covering software updates.

RemediationAI

HP states it is releasing software updates to mitigate the issue, so the primary action is to obtain the fixed HP One Agent package from HP advisory HPSBHF04150 (https://support.hp.com/us-en/document/ish_15886229-15886255-16/hpsbhf04150) and deploy it to every HP PC with the agent installed; the specific fixed version numbers are not stated in the available data and must be read from that bulletin. Patch available per vendor advisory. Because exploitation is gated on an attacker already holding a low-privileged local account on the endpoint, reducing the number of local accounts and reviewing who can write to directories the agent searches lowers exposure while the update is staged, at the cost of tightening day-to-day user workflows; the sources do not identify a documented workaround, so disabling or removing HP One Agent on machines that do not require it is the only scope-reduction option implied by the data, and that removes whatever management functionality the agent provides.

Affected VersionsENISA

HP One Agent Software 0 <1.87.4769.0

Affected Packages

euvd hp_one_agent_software fix: 1.87.4769.0

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in euvd

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

The root cause class is CWE-427, Uncontrolled Search Path Element. Applications that resolve a DLL, executable or helper component by name rather than by an absolute path inherit the operating system's search order, so a file placed in any directory that is searched ahead of the legitimate one is loaded instead. For HP One Agent this means a local user who can write into a searched location could get code of their choosing loaded into the agent's context, which is why the impact is framed as escalation of privilege and/or arbitrary code execution. The supplied sources do not describe the exact trigger or name the specific writable path involved, so the precise precondition beyond "low-privileged local account plus write access to a searched location" remains unverified. The affected CPE string (cpe:2.3:a:hp_inc.:hp_one_agent_software) carries a wildcard version, meaning no version boundary is asserted in the available data; HP's advisory HPSBHF04150 is the authoritative source for which builds are affected and fixed. Systems without HP One Agent deployed are out of scope entirely, and there is no remote or network vector in the assessed metrics.

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Severity by source

Vendor (hp) PRIMARY 8.5 HIGH
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
vuln.today AI 7.8 HIGH

Local search-path hijack (CWE-427) by an already-authenticated low-privilege user with no interaction, yielding full local code execution, so AV:L/PR:L and C/I/A:H.

3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
4.0 AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Primary rating from Vendor (hp).

CVSS VectorVendor: hp

Attack Vector
Local
Attack Complexity
Low
Attack Requirements
None
Privileges Required
Low
User Interaction
None
Vulnerable system: Confidentiality
High
Vulnerable system: Integrity
High
Vulnerable system: Availability
High
Subsequent system: Confidentiality
None
Subsequent system: Integrity
None
Subsequent system: Availability
None

Lifecycle Timeline

2
Patch available
Oct 23, 2026 - 19:02 EUVD
CVE Published
Oct 23, 2026 - 18:33 cve.org
HIGH 8.5

DescriptionCVE.org

A potential security vulnerability has been identified in HP One Agent for certain HP PC products, which might allow for escalation of privilege and/or arbitrary code execution. HP is releasing software updates to mitigate the potential vulnerability.

Executive ViewAI

Why It Matters

HP One Agent on certain HP PCs contains a privilege escalation vulnerability (CVE-2026-91093) that allows an attacker with an existing low-privileged account to gain elevated access and potentially execute arbitrary code. This impacts the confidentiality, integrity, and availability of affected endpoints, and while no exploitation has been observed, the vulnerability's high severity and local attack vector make it a priority for remediation. Leadership should care because compromised endpoints can serve as a foothold for broader network compromise and data exposure.

Business Impact: High
Compensating Controls

No vendor-released patch identified at time of analysis. Interim mitigations include restricting low-privileged account access on affected HP PCs, monitoring for anomalous file creation in directories searched by HP One Agent, and applying application allowlisting to block unauthorized executables.

Threat Intelligence Overview

EPSS Score
0.2%
Top 95% exploitable
Prevalence
Medium
vendor-specific management agent bundled on HP PCs; broad but not universal
Social Media
1
Sightings
Data Quality
4 sources
Confidence: Medium

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity HIGH
CISA KEV No
Public POC No
EPSS 0.2%
Patch available Yes
Active threat No
Deciding rule
HIGH severity (CVSS 7.0-8.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision
Scheduled
Exploitation
None
System Exposure· derived
Small
Automatable
No
Human Impact
High
Technical Impact
Total

Priority Score

42
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +42
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Remote Code Execution represents the critical moment when an attacker successfully runs arbitrary code on a target system without physical access.

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