High severity8.1NVD Advisory· Published Oct 12, 2021· Updated Jun 17, 2026
CVE-2021-27395
CVE-2021-27395
Description
A vulnerability has been identified in SIMATIC Process Historian 2013 and earlier (All versions), SIMATIC Process Historian 2014 (All versions < SP3 Update 6), SIMATIC Process Historian 2019 (All versions), SIMATIC Process Historian 2020 (All versions). An interface in the software that is used for critical functionalities lacks authentication, which could allow a malicious user to maliciously insert, modify or delete data.
Affected products
12- cpe:2.3:a:siemens:simatic_process_historian_2013:*:*:*:*:*:*:*:*
cpe:2.3:a:siemens:simatic_process_historian_2014:-:sp1:*:*:*:*:*:*+ 3 more
- cpe:2.3:a:siemens:simatic_process_historian_2014:-:sp1:*:*:*:*:*:*
- cpe:2.3:a:siemens:simatic_process_historian_2014:-:sp2:*:*:*:*:*:*
- cpe:2.3:a:siemens:simatic_process_historian_2014:-:sp3:*:*:*:*:*:*
- cpe:2.3:a:siemens:simatic_process_historian_2014:-:sp3_update4:*:*:*:*:*:*
- cpe:2.3:a:siemens:simatic_process_historian_2019:*:*:*:*:*:*:*:*
- cpe:2.3:a:siemens:simatic_process_historian_2020:*:*:*:*:*:*:*:*
(expand)+ 4 more
- (no CPE)
- (no CPE)range: All versions
- (no CPE)range: All versions < SP3 Update 6
- (no CPE)range: All versions
- (no CPE)range: All versions
Patches
Vulnerability mechanics
References
1- cert-portal.siemens.com/productcert/pdf/ssa-766247.pdfnvdVendor Advisory
News mentions
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