Medium severity · published Nov 9, 2021
CVE-2021-40364
A vulnerability has been identified in SIMATIC PCS 7 V8.2 (All versions), SIMATIC PCS 7 V9.0 (All versions < V9.0 SP3 UC04), SIMATIC PCS 7 V9.1 (All versions < V9.1 SP1), SIMATIC…
5.5
CVSS
0.2%
EPSS
No
On KEV
Description
A vulnerability has been identified in SIMATIC PCS 7 V8.2 (All versions), SIMATIC PCS 7 V9.0 (All versions < V9.0 SP3 UC04), SIMATIC PCS 7 V9.1 (All versions < V9.1 SP1), SIMATIC WinCC V15 and earlier (All versions < V15 SP1 Update 7), SIMATIC WinCC V16 (All versions < V16 Update 5), SIMATIC WinCC V17 (All versions < V17 Update 2), SIMATIC WinCC V7.4 (All versions < V7.4 SP1 Update 19), SIMATIC WinCC V7.5 (All versions < V7.5 SP2 Update 5). The affected systems store sensitive information in log files. An attacker with access to the log files could publicly expose the information or reuse it to develop further attacks on the system.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 15% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SP
Simatic Pcs 7 · Siemens
through 8.2; 9.0 before 9.1; 9.1 · source: NVD
SW
Simatic Wincc · Siemens
through 7.4; 7.5; 7.5; 7.5; 7.5; 7.5; +12 more · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-40364
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-40364
Vendor Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-840188.pdf
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