CVE-2021-27657 Metasys Improper Privilege Management
Authenticated users can escalate privileges to access or modify system files via crafted web messages in Johnson Controls Metasys.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-27657?
CVE-2021-27657 is a high-severity vulnerability in Johnson Controls Metasys, published on 4 Jun 2021. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Successful exploitation of this vulnerability could give an authenticated Metasys user an unintended level of access to the server file system, allowing them to access or modify system files by sending specifically crafted web messages to the Metasys system. This issue affects: Johnson Controls Metasys version 11.0 and prior versions.
Weakness: CWE-269
Which versions are affected by CVE-2021-27657?
It affects 1 product.
Products include Johnsoncontrols Metasys.
How do I fix CVE-2021-27657?
No fix has been published for CVE-2021-27657 yet. Limit exposure of the affected software until one is available.
Is CVE-2021-27657 being exploited?
There is no known exploitation of CVE-2021-27657 in the wild and no public exploit code.
Sources
Also known as GHSA-g3gv-gq3r-m3m6.