What is the CVSS score of CVE-2026-30896?

CVE-2026-30896 has a CVSS 3.0 base score of 7.8 (High). CVSS vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.0%.

How to fix or mitigate CVE-2026-30896?

Within 24 hours: Identify all systems running Qsee Client 1.0.1 or prior and restrict installer execution permissions. Within 7 days: Communicate to all users that they must not download or execute Qsee Client installers from untrusted sources, and verify whether your organization uses affected versions through asset inventory. Within 30 days: Upgrade to Qsee Client version 1.0.2 or later once available, or remove the application if no upgrade path exists.

Qsee Client CVE-2026-30896

HIGH

Uncontrolled Search Path Element (CWE-427)

2026-03-09 vultures@jpcert.or.jp

Privilege Escalation RCE Qsee Client

7.8

CVSS 3.0 · NVD

View

Attack ChainAIDerived

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

Access

Place malicious DLL in installer directory
Exploit

User executes Qsee Client installer
Execution

Installer loads malicious DLL
Impact

Execute arbitrary code with admin privileges

Vulnerability Assessment

Weakness	CWE CWE-427 OWASP Top 10:2025 A08:2025 - Software or Data Integrity Failures ASVS 5.0 V13 - Configuration Search path element control
Exploitation Conditions	Qsee Client versions 1.0.1 and prior installed on Windows system. User must be socially engineered to execute the installer after attacker places malicious DLL in the same directory. Requires local file write access and user interaction to run installer.
Impact	CVSS 7.8 (HIGH). Attack vector: Local. Complexity: Low. Privileges required: None. User interaction: Required. Exploitation requires authentication.
Exploit ScenarioDerived	An attacker (requires authentication) could exploit this vulnerability to compromise the affected system.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).

No patch listed yet 0.0% exploitation probability (EPSS)

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AnalysisAIv1 – Mar 12, 2026

Arbitrary code execution with administrative privileges in Qsee Client 1.0.1 and earlier through insecure DLL loading in the installer. An attacker can exploit this by placing a malicious DLL in the same directory as the installer and tricking a user into executing it. No patch is currently available.

Earlier versions of this analysis (1)

v1 Mar 12, 2026 - 21:56 CVSS 7.8

The installer for Qsee Client versions 1.0.1 and prior insecurely load Dynamic Link Libraries (DLLs). When a user is directed to place some malicious DLL to the same directory and execute the affected installer, then arbitrary code may be executed with the administrative privilege. [CVSS 7.8 HIGH]

RemediationAI

Monitor vendor advisories for a patch.

Affects your stack

Find out whether the stacks and servers you run are on an affected version.

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

Technical ContextAI · show details

Classified as CWE-427 (Uncontrolled Search Path Element). Affects Qsee Client. The installer for Qsee Client versions 1.0.1 and prior insecurely load Dynamic Link Libraries (DLLs). When a user is directed to place some malicious DLL to the same directory and execute the affected installer, then arbitrary code may be executed with the administrative privilege.

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 7.8 HIGH

AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

DescriptionCVE.org

Executive ViewAI

Why It Matters

Qsee Client versions 1.0.1 and earlier contain a critical vulnerability allowing attackers to execute arbitrary code with administrative privileges if users are socially engineered into running a malicious installer from an attacker-controlled location. This affects any organization using Qsee Client for surveillance or security monitoring, potentially compromising system integrity and enabling lateral movement across the network.

Business Impact: High

Compensating Controls

Implement application whitelisting to prevent unauthorized DLL execution; restrict user permissions to prevent installer execution without administrative review; isolate systems running Qsee Client on a segmented network; monitor and block execution from user-writable directories; disable installer auto-execution features; require signed binaries only. No vendor patch currently available—continuous monitoring for patch release is required.

Threat Intelligence Overview

EPSS Score

0.0%

Top 97% exploitable

Data Quality

4 sources

Confidence: Medium

NVD

CVE.org

EPSS

VulDB

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 0.0%

Patch available No

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· derived

Scheduled

Exploitation· derived

None

System Exposure· derived

Small

Automatable· derived

Human Impact

High

Priority Score

Low Medium High Critical

KEV: 0

EPSS: 0

CVSS: +39

PoC: 0

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Attack Technique

Privilege Escalation HIGH

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

Remote Code Execution CRITICAL

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