CVE-2016-3949

HIGH

SIMATIC S7-300 CPU < 3.2.12/3.3.12 DoS via ISO-TSAP/Profibus Packets

Title source: llm

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.

References (4)

Core 4

Core References

Vendor Advisory x_refsource_confirm

http://www.siemens.com/cert/pool/cert/siemens_security_advisory_ssa-818183.pdf

Third Party Advisory, VDB Entry vdb-entry x_refsource_sectrack

http://www.securitytracker.com/id/1036089

Mitigation, Third Party Advisory, US Government Resource x_refsource_misc

https://ics-cert.us-cert.gov/advisories/ICSA-16-161-01

Vendor Advisory x_refsource_confirm

https://cert-portal.siemens.com/productcert/pdf/ssa-818183.pdf

Scores

CVSS v3 7.5

EPSS 0.0486

EPSS Percentile 89.7%

Attack Vector NETWORK

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Details

CWE

CWE-399

Status published

Products (2)

siemens/simatic_s7-300_with_profitnet_support_firmware 3.2.11

siemens/simatic_s7-300_without_profitnet_support_firmware 3.3.11

Published Jun 27, 2016

Tracked Since Feb 18, 2026