CVE-2020-15787 Auth bypass in SIMATIC HMI Unified Comfort Panels
Remote attackers can brute-force passwords due to insufficient validation, gaining unauthorized access to the Sm@rt Server on Siemens HMI panels.
- 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-2020-15787?
CVE-2020-15787 is a critical authentication bypass vulnerability in Siemens SIMATIC HMI Unified Comfort Panels, published on 9 Sep 2020. 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 SIMATIC HMI Unified Comfort Panels (All versions <= V16). Affected devices insufficiently validate authentication attempts as the information given can be truncated to match only a set number of characters versus the whole provided string. This could allow a remote attacker to discover user passwords and obtain access to the Sm@rt Server via a brute-force attack.
Which versions are affected by CVE-2020-15787?
It affects 1 product.
Products include Siemens Simatic Hmi United Comfort Panels Firmware.
How do I fix CVE-2020-15787?
No fix has been published for CVE-2020-15787 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2020-15787 being exploited?
There is no known exploitation of CVE-2020-15787 in the wild and no public exploit code.
Sources
Also known as GHSA-625f-424x-6j4w.