CVE-2021-32943 Memory corruption in WebAccess/SCADA

What is CVE-2021-32943?

CVE-2021-32943 is a critical memory corruption vulnerability in WebAccess/SCADA, published on 10 Aug 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

The affected product is vulnerable to a stack-based buffer overflow, which may allow an attacker to remotely execute arbitrary code on the WebAccess/SCADA (WebAccess/SCADA versions prior to 8.4.5, WebAccess/SCADA versions prior to 9.0.1).

Weakness: CWE-787, CWE-121

Which versions are affected by CVE-2021-32943?

It affects 1 product.

Products include Advantech Webaccess\/Scada.

How do I fix CVE-2021-32943?

No fix has been published for CVE-2021-32943 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2021-32943 being exploited?

There is no known exploitation of CVE-2021-32943 in the wild and no public exploit code.

Other vulnerabilities in WebAccess/SCADA

• CVE-2023-1437 CVE-2023-1437 Critical 9.8
• CVE-2019-6519 Auth bypass in n/a Critical 9.8
• CVE-2019-6523 SQL injection in n/a Critical 9.8
• CVE-2021-22669 Privilege escalation in Advantech WebAccess/SCADA High 8.8
• CVE-2020-13554 Privilege escalation in Advantech High 8.8

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-pg6r-cmxx-v6vf.