CVE-2020-12516 WAGO: PLC families 750-88x and 750-352 prone to DoS attack
Attackers can cause a denial of service on WAGO PLCs by exploiting a vulnerability in older firmware versions.
- 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-2020-12516?
CVE-2020-12516 is a high-severity denial of service vulnerability in WAGO 750-331/xxx-xxx, published on 10 Dec 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Older firmware versions (FW1 up to FW10) of the WAGO PLC family 750-88x and 750-352 are vulnerable for a special denial of service attack.
Weakness: CWE-400
Which versions are affected by CVE-2020-12516?
It affects 10 products.
Products include Wago 750-331 Firmware, Wago 750-352 Firmware, Wago 750-829 Firmware, Wago 750-831 Firmware, Wago 750-852 Firmware, Wago 750-880 Firmware and 4 more.
How do I fix CVE-2020-12516?
No fix has been published for CVE-2020-12516 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2020-12516 being exploited?
There is no known exploitation of CVE-2020-12516 in the wild and no public exploit code.
Other vulnerabilities in WAGO 750-331/xxx-xxx
Sources
Also known as GHSA-wm2q-rjqh-v4ff.