CVE-2016-7987

An issue was discovered in Siemens ETA4 firmware (all versions prior to Revision 08) of the SM-2558 extension module for: SICAM AK, SICAM TM 1703, SICAM BC 1703, and SICAM AK 3. Specially crafted packets sent to Port 2404/TCP could cause the affected device to go into defect mode. A cold start might be required to recover the system, a Denial-of-Service Vulnerability.

• CWE-19

• http://www.securityfocus.com/bid/93832Third Party Advisory, VDB Entry
• https://ics-cert.us-cert.gov/advisories/ICSA-16-299-01Mitigation, Third Party Advisory, US Government Resource
• http://www.securityfocus.com/bid/93832Third Party Advisory, VDB Entry
• https://ics-cert.us-cert.gov/advisories/ICSA-16-299-01Mitigation, Third Party Advisory, US Government Resource

Published

Feb 13, 2017

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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