High severity7.5NVD Advisory· Published Jun 27, 2016· Updated Jun 17, 2026
CVE-2016-3949
CVE-2016-3949
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
3- cpe:2.3:o:siemens:simatic_s7-300_without_profitnet_support_firmware:3.3.11:*:*:*:*:*:*:*
- cpe:2.3:o:siemens:simatic_s7-300_with_profitnet_support_firmware:3.2.11:*:*:*:*:*:*:*
- Range: before 3.2.12 (Profinet-enabled) / before 3.3.12 (Profinet-disabled)
Patches
Vulnerability mechanics
References
4- www.securitytracker.com/id/1036089nvdThird Party AdvisoryVDB Entry
- www.siemens.com/cert/pool/cert/siemens_security_advisory_ssa-818183.pdfnvdVendor Advisory
- ics-cert.us-cert.gov/advisories/ICSA-16-161-01nvdMitigationThird Party AdvisoryUS Government Resource
- cert-portal.siemens.com/productcert/pdf/ssa-818183.pdfnvd
News mentions
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