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Attack ChainAIDerived

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

  1. Access
    Obtain local privileged foothold
  2. Delivery
    Invoke vulnerable kernel-mode component
  3. Exploit
    Trigger heap buffer overflow (CWE-122)
  4. Execution
    Corrupt kernel memory and hijack execution
  5. Impact
    Execute arbitrary code at kernel privilege

Vulnerability Assessment

Weakness
CWE
ASVS 5.0
V15 - Secure Coding and Architecture Heap buffer bounds checking
MITRE ATT&CK

1 technique across 1 tactic: Execution

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

Exploitation Conditions

Exploitation requires local code execution on a Windows host with HP Sure Click / HP Wolf Security (Enterprise, Wolf Security for Business, Wolf Pro Security, or Wolf Pro Security Edition) installed at a version below 4.4.33 (AV:L). Limiting factors are significant: the attacker must already hold elevated privileges (PR:H) and overcome a non-trivial triggering condition such as a memory-corruption race or precise heap state (AC:H), and no remote or network path exists. The description does not name a specific feature toggle or non-default configuration, but the kernel-mode driver component must be present and active, which it is in default installations of these products; verify the exact triggering surface against HP advisory hpsbhf04157.

Impact

This is a medium-severity local privilege escalation / code execution flaw (CVSS 6.4) whose real-world urgency is tempered by its exploitation prerequisites. The vendor CVSS vector CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H indicates a local attack vector with high attack complexity and high privileges required, yielding high confidentiality, integrity and availability impact within an unchanged scope. There is no KEV listing, no EPSS score, and no POC referenced in the provided data, so exploitation is not demonstrated - no public exploit identified at time of analysis. Notably, the PR:H rating is unusual for a privilege-escalation bug, since such flaws typically begin from an already-compromised low-privileged user (PR:L); this suggests either that a specific pre-existing elevated/configuration context is needed or a conservative vendor scoring - verify with HP's advisory. The combination of local-only access, high complexity, and high required privileges makes this a patch-on-normal-cadence item rather than an emergency, but the kernel-level code execution impact means it is a valuable post-compromise escalation primitive and should not be deferred indefinitely on HP-managed fleets.

Exploit ScenarioDerived

An attacker who already has local, privileged access to a Windows endpoint running an unpatched HP Sure Click / HP Wolf Security build (prior to 4.4.33) triggers a heap-based buffer overflow in the product's kernel-mode component. By winning the required timing/condition window (reflected in AC:H), they corrupt kernel memory to execute arbitrary code at kernel privilege, fully compromising the host. No public exploit code is identified at time of analysis, and the attack requires local access rather than remote delivery.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
Patch available 0.1% exploitation probability (EPSS)

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AnalysisAIv1 – Oct 08, 2026

A kernel-mode heap buffer overflow (CWE-122) in HP Sure Click and the related HP Wolf Security product family at versions below 4.4.33 allows a local attacker who already holds elevated privileges to corrupt kernel memory and potentially escalate to full system-level code execution. The flaw is reachable only from a local context on a Windows host running the affected endpoint security agent, requires a non-trivial triggering condition such as precise heap state or a memory-corruption race, and exposes no network or remote attack path. HP has released version 4.4.33 as the vendor-released fix, and no public exploit code has been identified at time of analysis.

RemediationAI

Upgrade to HP Sure Click / HP Wolf Security version 4.4.33 (Vendor-released patch: 4.4.33), following HP security bulletin hpsbhf04157 at https://support.hp.com/us-en/document/ish_15759419-15759442-16/hpsbhf04157 for the product-specific installer and deployment guidance; verify post-upgrade that the installed agent builds across all four product lines report 4.4.33 or later. Until the update is staged fleet-wide, the most effective compensating control is to minimize the population of accounts holding local administrative rights on systems running the affected agent, since exploitation requires the attacker to already possess elevated privileges - this reduces the pool of actors capable of reaching the vulnerable kernel surface, at the cost of added help-desk friction for legitimate admin tasks. Where the endpoint isolation component is not a required business function, consider temporarily disabling or uninstalling the HP Sure Click / Wolf Security agent on the highest-risk hosts as a stopgap, accepting the trade-off of losing the browser and document isolation protections it provides. Additionally, monitor for unexpected kernel driver loads, anomalous driver-related crash dumps, and privilege-escalation indicators on hosts with the agent installed, since a heap-overflow attempt may surface as instability or a BugCheck before any successful escalation.

Affected VersionsENISA

HP Sure Click Enterprise 0 <4.4.33
HP Wolf Security for Business 0 <4.4.33
HP Wolf Pro Security 0 <4.4.33
HP Wolf Pro Security Edition 0 <4.4.33

Affected Packages

euvd hp_sure_click_enterprise fix: 4.4.33
euvd hp_wolf_pro_security fix: 4.4.33
euvd hp_wolf_pro_security_edition fix: 4.4.33
euvd hp_wolf_security_for_business fix: 4.4.33

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 4 packages 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 is a heap-based buffer overflow (CWE-122) in a kernel-space component of HP Sure Click / HP Wolf Security - the endpoint isolation and browser-hardening stack that includes HP Sure Click Enterprise, HP Wolf Security for Business, HP Wolf Pro Security, and HP Wolf Pro Security Edition (CPE: cpe:2.3:a:hp_inc:hp_sure_click_enterprise, hp_wolf_security_for_business, hp_wolf_pro_security, hp_wolf_pro_security_edition). Because the vulnerable code runs at kernel privilege level rather than in the user-mode application layer, successful corruption of adjacent heap memory can let an attacker redirect control flow or overwrite kernel data structures, converting a bounded overflow into privilege escalation to SYSTEM and arbitrary code execution. Exploitation is gated by the local-only attack vector (AV:L) and the high privilege prerequisite (PR:H in the vendor vector), meaning the attacker must already be operating with elevated rights on the host before the driver surface is reachable, and must additionally satisfy a high-complexity trigger condition (AC:H) tied to memory layout or a race. The advisory indicates the component is present and active in default installations, so the exposure exists wherever the affected agent is deployed even though exploitation itself is difficult.

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Severity by source

Vendor (hp) PRIMARY 6.4 MEDIUM
AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
vuln.today AI 7.0 HIGH

Local privilege escalation realistically starts from a low-privileged user, so PR:L (vs vendor PR:H); AC:H reflects the heap/race triggering condition, and kernel code execution gives full C/I/A.

3.1 AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
4.0 AV:L/AC:H/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
High
Privileges Required
High
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

1
Patch available
Oct 08, 2026 - 17:03 EUVD

DescriptionCVE.org

A kernel buffer overflow vulnerability in HP Sure Click versions prior to 4.4.33 may allow local privilege escalation or arbitrary code execution. HP has released version 4.4.33 to address this vulnerability.

Threat Intelligence Overview

EPSS Score
0.1%
Top 99% exploitable
Prevalence
Medium
HP enterprise endpoint security, common on HP business fleets but not universal
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 MEDIUM
CISA KEV No
Public POC No
EPSS 0.1%
Patch available Yes
Active threat No
Deciding rule
MEDIUM severity (CVSS 4.0-6.9)
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· derived
Defer
Exploitation
None
System Exposure· derived
Small
Automatable
No
Human Impact· derived
Medium
Technical Impact
Total

Priority Score

32
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +32
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Privilege escalation occurs when an attacker leverages flaws in access control mechanisms to gain permissions beyond what they were originally granted.

A buffer overflow occurs when a program writes more data to a memory buffer than it was allocated to hold, causing the excess data to spill into adjacent memory regions.

A heap overflow occurs when a program writes data beyond the bounds of a buffer allocated in the heap memory region.

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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