Medium severity · published Jun 13, 2023
CVE-2023-33920
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 the hash of the root password in a hard-coded form, which could be exploited for UART console login to the device. An attacker with direct physical access could exploit this vulnerability.
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 30% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CF
Cpci85 Firmware · Siemens
before v05; before v05 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-33920
CVE.org
https://www.cve.org/CVERecord?id=CVE-2023-33920
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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