CVE-2016-3963

MEDIUMNVD 5.35.3—Elevated

5.3

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

CVSS v3: 5.3
EG Score: 5.3(medium)
EPSS: 91.3%
KEV: Not listed

Published

April 8, 2016

Last Modified

May 6, 2026

References (6)

cve@mitrehttp://www.siemens.com/cert/pool/cert/siemens_security_advisory_ssa-751155.pdf
cve@mitrehttps://ics-cert.us-cert.gov/advisories/ICSA-16-103-02
cve@mitrehttps://www.exploit-db.com/exploits/44721/
af854a3a-2127-422b-91ae-364da2661108http://www.siemens.com/cert/pool/cert/siemens_security_advisory_ssa-751155.pdf
af854a3a-2127-422b-91ae-364da2661108https://ics-cert.us-cert.gov/advisories/ICSA-16-103-02
af854a3a-2127-422b-91ae-364da2661108https://www.exploit-db.com/exploits/44721/

Data Freshness Timeline

(refreshed 9× in last 7d / 20× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

2026-06-08 14:14 UTCEPSS rescore
2026-06-07 15:22 UTCEPSS rescore
2026-06-07 15:22 UTCEPSS rescore
2026-06-06 13:45 UTCEPSS rescore
2026-06-05 22:44 UTCEPSS rescore
2026-06-05 06:08 UTCEPSS rescore
2026-06-05 06:08 UTCEPSS rescore
2026-06-04 13:10 UTCEPSS rescore
2026-06-04 13:10 UTCEPSS rescore
2026-06-02 20:10 UTCEPSS rescore
2026-06-01 13:49 UTCEPSS rescore
2026-06-01 13:49 UTCEPSS rescore
2026-05-31 22:28 UTCEPSS rescore
2026-05-31 22:28 UTCEPSS rescore
2026-05-31 00:14 UTCEPSS rescore
2026-05-29 13:41 UTCEPSS rescore
2026-05-28 13:42 UTCEPSS rescore
2026-05-28 13:42 UTCEPSS rescore
2026-05-27 13:38 UTCEPSS rescore
2026-05-27 13:38 UTCEPSS rescore

Publicly available exploits

(1 reference)

Working exploit code is in the public domain (1 Exploit-DB entry). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

Exploit-DBEDB-44721
First seen May 23, 2018
Siemens SCALANCE S613 - Remote Denial of Service
Open source ↗

Frequently asked(5)

What is CVE-2016-3963?

CVE-2016-3963 is a medium vulnerability published on April 8, 2016. Siemens SCALANCE S613 allows remote attackers to cause a denial of service (web-server outage) via traffic to TCP port 443.

When was CVE-2016-3963 disclosed?

CVE-2016-3963 was first published in the National Vulnerability Database on April 8, 2016, with the most recent update on May 6, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2016-3963 actively exploited?

CVE-2016-3963 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 91.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2016-3963?

CVE-2016-3963 has a CVSS v3 base score of 5.3 (NVD).

How do I remediate CVE-2016-3963?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2016-3963, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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CVE-2016-3963

📅 Published

🔄 Last Modified

🔗 References (6)