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CVE-2021-27386

🗓️ 22 May 2025 21:12:20Reported by redhat.comType 
redhatcve
 redhatcve
🔗 access.redhat.com👁 26 Views

Vulnerability in SIMATIC and SINAMICS devices causing potential Denial-of-Service due to SmartVNC leak.

Related
Refs
ReporterTitlePublishedViews
Family
attackerkb
attackerkb
CVE-2021-27386
12 May 202114:15
–attackerkb
bdu_fstec
BDU FSTEC
Siemens SIMATIC Memory Release Error
28 Jun 202300:00
–bdu_fstec
cnnvd
CNNVD
Siemens SIMATIC WinCC buffer error vulnerability
11 May 202100:00
–cnnvd
cnvd
CNVD
Siemens SmartVNC Heap Allocation Disclosure Vulnerability
12 May 202100:00
–cnvd
cve
CVE
CVE-2021-27386
12 May 202113:18
–cve
cvelist
Cvelist
CVE-2021-27386
12 May 202113:18
–cvelist
euvd
EUVD
EUVD-2021-14141
7 Oct 202500:30
–euvd
ics
ICS
Siemens SINAMICS Medium Voltage Products Remote Access (Update B)
11 May 202100:00
–ics
ics
ICS
Siemens SIMATIC SmartVNC HMI WinCC Products (Update B)
11 May 202100:00
–ics
nvd
NVD
CVE-2021-27386
12 May 202114:15
–nvd
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27 Mar 2026 14:25Current
7High risk
Vulners AI Score7
CVSS 25
CVSS 3.17.5
EPSS0.01826
26