CVE-2021-40397 — HIGH (7.8)

Vulnerability Description

A privilege escalation vulnerability exists in the installation of Advantech WISE-PaaS/OTA Server 3.0.9. 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 Score

7.8

HIGH

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Advantech	Wise-Paas\/Ota	3.0.9

Related Weaknesses (CWE)

CWE-276

References

https://talosintelligence.com/vulnerability_reports/TALOS-2021-1409ExploitThird Party Advisory
https://talosintelligence.com/vulnerability_reports/TALOS-2021-1409ExploitThird Party Advisory

FAQ

What is CVE-2021-40397?

CVE-2021-40397 is a vulnerability with a CVSS score of 7.8 (HIGH). A privilege escalation vulnerability exists in the installation of Advantech WISE-PaaS/OTA Server 3.0.9. A specially-crafted file can be replaced in the system to escalate privileges to NT SYSTEM auth...

How severe is CVE-2021-40397?

CVE-2021-40397 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2021-40397?

Check the references section above for vendor advisories and patch information. Affected products include: Advantech Wise-Paas\/Ota.