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.

Category

7.5
CVSS
Severity: High
CVSS 3.0 •
CVSS 2.0 •
EPSS 3.86% Top 15%
Vendor Advisory siemens.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://www.siemens.com/cert/pool/cert/siemens_security_advisory_ssa-818183.pdf vendor advisory
http://www.securitytracker.com/id/1036089 vdb entry third party advisory
https://ics-cert.us-cert.gov/advisories/ICSA-16-161-01 us government resource third party advisory mitigation
https://cert-portal.siemens.com/productcert/pdf/ssa-818183.pdf

Frequently Asked Questions

What is the severity of CVE-2016-3949?
CVE-2016-3949 has been scored as a high severity vulnerability.
How to fix CVE-2016-3949?
To fix CVE-2016-3949, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2016-3949 being actively exploited in the wild?
It is possible that CVE-2016-3949 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~4% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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