CVE-2021-33023 Advantech WebAccess
A heap-based buffer overflow in Advantech WebAccess allows remote attackers to execute arbitrary code, posing a critical risk to industrial control systems.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-33023?
CVE-2021-33023 is a critical memory corruption vulnerability in Advantech Webaccess, published on 18 Oct 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Which versions are affected by CVE-2021-33023?
It affects 1 product.
Products include Advantech Webaccess.
How do I fix CVE-2021-33023?
No fix has been published for CVE-2021-33023 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-2021-33023 being exploited?
There is no known exploitation of CVE-2021-33023 in the wild and no public exploit code.
Other vulnerabilities in Advantech Webaccess
- CVE-2014-9208 Multiple stack-based buffer overflows in unspecified DLL files in Advantech WebAccess before 8.0.1 allow remote attackers to execute arbitra
- CVE-2021-38389 Advantech WebAccess
- CVE-2021-38408 Memory corruption in Advantech WebAccess
- CVE-2020-12019 Memory corruption in WebAccess Node
- CVE-2020-10638 Memory corruption in Advantech WebAccess Node
Sources
Also known as GHSA-qw3w-g5fj-98wc.