CVE-2021-33023 — CRITICAL (9.8)

Q: What is CVE-2021-33023?

CVE-2021-33023 is a vulnerability with a CVSS score of 9.8 (CRITICAL). Advantech WebAccess versions 9.02 and prior are vulnerable to a heap-based buffer overflow, which may allow an attacker to remotely execute code.

Q: How severe is CVE-2021-33023?

CVE-2021-33023 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.

Q: Is there a patch for CVE-2021-33023?

Check the references section above for vendor advisories and patch information. Affected products include: Advantech Webaccess.

Vulnerability Description

Advantech WebAccess versions 9.02 and prior are vulnerable to a heap-based buffer overflow, which may allow an attacker to remotely execute code.

CVSS Score

9.8

CRITICAL

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Advantech	Webaccess	<= 9.0.2

Related Weaknesses (CWE)

CWE-122 CWE-787

References

https://us-cert.cisa.gov/ics/advisories/icsa-21-285-02MitigationThird Party AdvisoryUS Government Resource
https://us-cert.cisa.gov/ics/advisories/icsa-21-285-02MitigationThird Party AdvisoryUS Government Resource

FAQ

What is CVE-2021-33023?

CVE-2021-33023 is a vulnerability with a CVSS score of 9.8 (CRITICAL). Advantech WebAccess versions 9.02 and prior are vulnerable to a heap-based buffer overflow, which may allow an attacker to remotely execute code.

How severe is CVE-2021-33023?

CVE-2021-33023 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2021-33023?

Check the references section above for vendor advisories and patch information. Affected products include: Advantech Webaccess.