CVE-2025-6073 Stack Buffer Overflow in MQTTCore
Attackers can trigger a stack buffer overflow in MQTTCore via REST interface, potentially leading to code execution on ABB RMC-100 controllers.
- 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-2025-6073?
CVE-2025-6073 is a high-severity memory corruption vulnerability in ABB RMC-100, published on 3 Jul 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Stack-based Buffer Overflow vulnerability in ABB RMC-100, ABB RMC-100 LITE.
When the REST interface is enabled by the user, and an attacker gains access to the control network, and user/password broker authentication is enabled, and CVE-2025-6074 is exploited, the attacker can overflow the buffer for username or password.
This issue affects RMC-100: from 2105457-043 through 2105457-045; RMC-100 LITE: from 2106229-015 through 2106229-016.
Weakness: CWE-121
Which versions are affected by CVE-2025-6073?
How do I fix CVE-2025-6073?
No fix has been published for CVE-2025-6073 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-2025-6073 being exploited?
There is no known exploitation of CVE-2025-6073 in the wild and no public exploit code.
Sources
Also known as GHSA-rmg9-687h-jx4v.