Out-of-Bounds Memory Access Vulnerability in Siemens SIMATIC HMI Products
CVE-2021-25661

7.5HIGH

Key Information:

Vendor
Siemens
Status
Simatic Hmi Comfort Outdoor Panels V15 7\" & 15\" (incl. Siplus Variants)
Simatic Hmi Comfort Outdoor Panels V16 7\" & 15\" (incl. Siplus Variants)
Simatic Hmi Comfort Panels V15 4\" - 22\" (incl. Siplus Variants)
Simatic Hmi Comfort Panels V16 4\" - 22\" (incl. Siplus Variants)
Vendor
CVE Published:
12 May 2021

Summary

An out-of-bounds memory access vulnerability has been discovered in the SmartVNC component of the Siemens SIMATIC HMI products. This security flaw allows an attacker to exploit the vulnerability on the client side by sending specially crafted data from the server, potentially leading to a Denial-of-Service condition.

Affected Version(s)

SIMATIC HMI Comfort Outdoor Panels V15 7\" & 15\" (incl. SIPLUS variants) All versions < V15.1 Update 6

SIMATIC HMI Comfort Outdoor Panels V16 7\" & 15\" (incl. SIPLUS variants) All versions < V16 Update 4

SIMATIC HMI Comfort Panels V15 4\" - 22\" (incl. SIPLUS variants) All versions < V15.1 Update 6

References

https://us-cert.cisa.gov/ics/advisories/icsa-21-131-12
x_refsource_MISC
https://cert-portal.siemens.com/productcert/pdf/ssa-53877...
x_refsource_CONFIRM

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.