CVE-2016-3963

MEDIUM

Siemens SCALANCE S613 - Denial of Service via TCP Port 443 Traffic

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2016-3963. PoCs published by t4rkd3vilz.

AI-analyzed exploit summary This exploit sends a malformed packet to Siemens SCALANCE S613 devices, triggering a remote denial of service (DoS) condition. The payload is a hex-encoded bytearray sent to port 5000000, causing the target device to crash.

Description

Siemens SCALANCE S613 allows remote attackers to cause a denial of service (web-server outage) via traffic to TCP port 443.

Exploits (1)

exploitdb WORKING POC
by t4rkd3vilz · pythondoslinux
https://www.exploit-db.com/exploits/44721

This exploit sends a malformed packet to Siemens SCALANCE S613 devices, triggering a remote denial of service (DoS) condition. The payload is a hex-encoded bytearray sent to port 5000000, causing the target device to crash.

Classification
Working Poc 90%
Attack Type
Dos
Complexity
Trivial
Reliability
Reliable
Target: Siemens SCALANCE S613 (MLFB: 6GK5613-0BA00-2AA3): All versions
No auth needed
Prerequisites: Network access to the target device · Target device must be running the vulnerable firmware
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (3)

Core 3
Core References
Exploit, Third Party Advisory exploit x_refsource_exploit-db
https://www.exploit-db.com/exploits/44721/

Scores

CVSS v3 5.3
EPSS 0.0859
EPSS Percentile 94.4%
Attack Vector NETWORK
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Details

Status published
Products (1)
siemens/scalance_s613
Published Apr 08, 2016
Tracked Since Feb 18, 2026