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CVE-2021-40388

HIGH

8.8

CVSS Score

Published: January 28, 2022 at 07:09 PM UTC

Updated: June 17, 2026 at 04:06 AM UTC

1 product affected across 1 vendorSq Manager

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Severity

HIGH8.8

Exploit prediction

EPSS 0.4%

SSVC

PoC

Description

A privilege escalation vulnerability exists in Advantech SQ Manager Server 1.0.6. A specially-crafted file can be replaced in the system to escalate privileges to NT SYSTEM authority. An attacker can provide a malicious file to trigger this vulnerability.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Sq Manager · Advantech

95%

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

x_refsource_MISCExploitThird Party Advisory

Source: [email protected]

https://talosintelligence.com/vulnerability_reports/TALOS-2021-1399

SSVC — Action Prioritization

SSVCPoCNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.8HIGH[email protected]

Attack Vector: LOCAL
Complexity: LOW
Privileges: LOW
User Interaction: NONE
Scope: CHANGED
Confidentiality: HIGH
Integrity: HIGH
Availability: HIGH

Vector?

Quick Info

StatusMODIFIED

CWE

CWE-276

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