CVE-2020-37168 Ecommerce Systempay 1.0 Production Key Brute Force
Attackers can brute force the weak production secret key to forge payment signatures and manipulate transaction amounts in Ecommerce Systempay.
- 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-2020-37168?
CVE-2020-37168 is a critical vulnerability in Paiement Ecommerce Systempay, published on 13 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Ecommerce Systempay 1.0 contains a weak cryptographic implementation vulnerability that allows attackers to brute force the 16-character production secret key used for payment signature generation. Attackers can extract payment form data and signatures from POST requests to the payment endpoint, then use SHA1 hash comparison to iteratively test key candidates until discovering the correct production key, enabling them to forge valid payment signatures and manipulate transaction amounts.
Weakness: CWE-328
Which versions are affected by CVE-2020-37168?
How do I fix CVE-2020-37168?
No fix has been published for CVE-2020-37168 yet. Limit exposure of the affected software until one is available.
Is CVE-2020-37168 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2020-37168 exists.
Sources
Also known as GHSA-2x94-2hh3-xhp5.