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Medium severity · published Sep 14, 2021
CVE-2021-33716
A vulnerability has been identified in SIMATIC CP 1543-1 (incl
6.5
CVSS
0.3%
EPSS
No
On KEV
Description
A vulnerability has been identified in SIMATIC CP 1543-1 (incl. SIPLUS variants) (All versions < V3.0), SIMATIC CP 1545-1 (All versions < V1.1). An attacker with access to the subnet of the affected device could retrieve sensitive information stored in cleartext.
CVSS vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack vector
Adjacent
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 17% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SC
Simatic CP 1543-1 Firmware · Siemens
before 3.0 · source: NVD
SC
Simatic CP 1545-1 Firmware · Siemens
before 1.1 · source: NVD
Affected product
SC
Simatic CP 1543-1 Firmware
Siemens
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-33716
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-33716
Patch
https://cert-portal.siemens.com/productcert/pdf/ssa-535997.pdf
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