How severe is CVE-2016-3963?

CVE-2016-3963 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.

Is CVE-2016-3963 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 9% (94th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2016-3963?

CVE-2016-3963 affects Siemens Scalance S613. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2016-3963?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2016-3963 published?

CVE-2016-3963 was published on 2016-04-08 and last updated on 2026-06-17.

CVE-2016-3963

CVE-2016-3963 is a medium-severity vulnerability in Siemens Scalance S613 with a CVSS 3.x base score of 5.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
CVSS v2: 5.0
EPSS exploit prediction: 9% (94th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Siemens Scalance S613
Published: 2016-04-08
Last modified: 2026-06-17

Description

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

Frequently asked questions

What is CVE-2016-3963?: Siemens SCALANCE S613 allows remote attackers to cause a denial of service (web-server outage) via traffic to TCP port 443.
How severe is CVE-2016-3963?: CVE-2016-3963 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.
Is CVE-2016-3963 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 9% (94th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2016-3963?: CVE-2016-3963 affects Siemens Scalance S613. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2016-3963?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2016-3963 published?: CVE-2016-3963 was published on 2016-04-08 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:h:siemens:scalance_s613:*:*:*:*:*:*:*:*

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