CVE-2021-40388

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.

CVSS v3.1

8.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

CVSS v3.0

8.8 HIGHCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

CVSS v2.0

7.2 HIGHAV:L/AC:L/Au:N/C:C/I:C/A:C

EPSS

0.36% chance of exploitation in the next 30 days, 29th percentile

Published

2022-01-28

Updated

2025-04-15

Proof-of-concept exploits (1)

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

References

• CVE Record
• NVD entry

Related

• CVE-2021-40382
• CVE-2021-40389
• CVE-2021-40381
• CVE-2021-4039
• CVE-2021-40380
• CVE-2021-40390