HIGH · 7.5

CVE-2016-3949

Siemens SIMATIC S7-300 Profinet-enabled CPU devices with firmware before 3.2.12 and SIMATIC S7-300 Profinet-disabled CPU devices with firmware before 3.3.12 allow remote attackers to cause a denial of...

Vulnerability Description

Siemens SIMATIC S7-300 Profinet-enabled CPU devices with firmware before 3.2.12 and SIMATIC S7-300 Profinet-disabled CPU devices with firmware before 3.3.12 allow remote attackers to cause a denial of service (defect-mode transition) via crafted (1) ISO-TSAP or (2) Profibus packets.

CVSS Score

7.5

HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH

Affected Products

VendorProductVersions
SiemensSimatic S7-300 With Profitnet Support Firmware3.2.11
SiemensSimatic S7-300 With Profitnet SupportAll versions
SiemensSimatic S7-300 Without Profitnet SupportAll versions
SiemensSimatic S7-300 Without Profitnet Support Firmware3.3.11

Related Weaknesses (CWE)

References

FAQ

What is CVE-2016-3949?

CVE-2016-3949 is a vulnerability with a CVSS score of 7.5 (HIGH). Siemens SIMATIC S7-300 Profinet-enabled CPU devices with firmware before 3.2.12 and SIMATIC S7-300 Profinet-disabled CPU devices with firmware before 3.3.12 allow remote attackers to cause a denial of...

How severe is CVE-2016-3949?

CVE-2016-3949 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2016-3949?

Check the references section above for vendor advisories and patch information. Affected products include: Siemens Simatic S7-300 With Profitnet Support Firmware, Siemens Simatic S7-300 With Profitnet Support, Siemens Simatic S7-300 Without Profitnet Support, Siemens Simatic S7-300 Without Profitnet Support Firmware.