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Medium severity · published Jun 13, 2023
CVE-2023-33921
A vulnerability has been identified in CP-8031 MASTER MODULE (All versions < CPCI85 V05), CP-8050 MASTER MODULE (All versions < CPCI85 V05)
6.8
CVSS
0.4%
EPSS
No
On KEV
Description
A vulnerability has been identified in CP-8031 MASTER MODULE (All versions < CPCI85 V05), CP-8050 MASTER MODULE (All versions < CPCI85 V05). The affected devices contain an exposed UART console login interface. An attacker with direct physical access could try to bruteforce or crack the root password to login to the device.
CVSS vector
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Physical
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 33% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CM
CP-8031 MASTER MODULE · Siemens
All versions < CPCI85 V05 · source: vendor
CM
CP-8050 MASTER MODULE · Siemens
All versions < CPCI85 V05 · source: vendor
CF
Cpci85 Firmware · Siemens
before v05; before v05 · source: NVD
Affected product
CM
CP-8031 MASTER MODULE
Siemens
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-33921
CVE.org
https://www.cve.org/CVERecord?id=CVE-2023-33921
packetstormsecurity.com
http://packetstormsecurity.com/files/173370/Siemens-A8000-CP-8050-CP-8031-Code-Execution-Command-Injection.html
seclists.org
http://seclists.org/fulldisclosure/2023/Jul/14
Patch
https://cert-portal.siemens.com/productcert/pdf/ssa-731916.pdf
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