Risk | Medium |
Patch available | YES |
Number of vulnerabilities | 1 |
CVE-ID | CVE-2021-31337 |
CWE-ID | CWE-306 |
Exploitation vector | Network |
Public exploit | N/A |
Vulnerable software Subscribe |
SINAMICS SL150 Hardware solutions / Firmware SINAMICS SM150 Hardware solutions / Firmware SINAMICS SM150i Hardware solutions / Firmware SIMATIC HMI KTP Mobile Panels Server applications / SCADA systems SIMATIC HMI Comfort Panels Server applications / SCADA systems |
Vendor | Siemens |
Security Bulletin
This security bulletin contains one medium risk vulnerability.
EUVDB-ID: #VU53224
Risk: Medium
CVSSv3.1: 6.7 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2021-31337
CWE-ID:
CWE-306 - Missing Authentication for Critical Function
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to compromise the target system.
The vulnerability exists due to the Telnet service of the SIMATIC HMI Comfort Panels system component does not require authentication. A remote attacker can gain access to the device.
MitigationInstall updates from vendor's website.
Vulnerable software versionsSINAMICS SL150: All versions
SINAMICS SM150: All versions
SINAMICS SM150i: All versions
SIMATIC HMI KTP Mobile Panels: before v16 Update 3a
SIMATIC HMI Comfort Panels: before v16 Update 3a
External linkshttp://ics-cert.us-cert.gov/advisories/icsa-21-131-04
http://cert-portal.siemens.com/productcert/pdf/ssa-752103.pdf
http://cert-portal.siemens.com/productcert/pdf/ssa-520004.pdf
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.