CVE-2024-56336 Security feature bypass in SINAMICS S200
Attackers can inject malicious code or install untrusted firmware on SINAMICS S200 devices due to an unlocked bootloader, compromising security features.
- 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-2024-56336?
CVE-2024-56336 is a critical vulnerability in Siemens SINAMICS S200, published on 11 Mar 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability has been identified in SINAMICS S200 (All versions with serial number beginning with SZVS8, SZVS9, SZVS0 or SZVSN and the FS number is 02). The affected device contains an unlocked bootloader. This security oversight enables attackers to inject malicious code, or install untrusted firmware. The intrinsic security features designed to protect against data manipulation and unauthorized access are compromised when the bootloader is not secured.
Weakness: CWE-287
Which versions are affected by CVE-2024-56336?
How do I fix CVE-2024-56336?
No fix has been published for CVE-2024-56336 yet. Limit exposure of the affected software until one is available.
Is CVE-2024-56336 being exploited?
There is no known exploitation of CVE-2024-56336 in the wild and no public exploit code.
Sources
Also known as GHSA-r6h4-5939-8vq9.