No exploitation reportedFix available

CVE-2019-13926

Q: Is CVE-2019-13926 actively exploited?

Active exploitation of CVE-2019-13926 has not been confirmed. Its EPSS score was 1.5% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

Q: What is the CVSS score for CVE-2019-13926?

CVE-2019-13926 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

No exploitation reported by the sources we read.

Published2020-02-11
Fixed in4.1
WeaknessCWE-400

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

A vulnerability has been identified in SCALANCE S602 (All versions >= V3.0 and < V4.1), SCALANCE S612 (All versions >= V3.0 and < V4.1), SCALANCE S623 (All versions >= V3.0 and < V4.1), SCALANCE S627-2M (All versions >= V3.0 and < V4.1). Specially crafted packets sent to port 443/tcp of affected devices could cause a Denial-of-Service condition of the web server. A cold reboot is required to restore the functionality of the device.

Timeline

dates in UTC

2020-02-1116:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 21:37 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2019-13926?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2019-13926?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Siemens scalance s602 firmwareversion to verify

Branch	Affected	Fixed in	Source
4.1	≥ 3.0, < 4.1	4.1	NVD

Siemens scalance s612 firmwareversion to verify

Branch	Affected	Fixed in	Source
4.1	≥ 3.0, < 4.1	4.1	NVD

Siemens scalance s623 firmwareversion to verify

Branch	Affected	Fixed in	Source
4.1	≥ 3.0, < 4.1	4.1	NVD

1 more product in the sources.

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Vendor advisories

ICSA-20-042-10 CISA4 known affected
Siemens SCALANCE S-600 (Update B)
SCALANCE S602 · SCALANCE S612 · SCALANCE S623 · +1 more

Full record on NVD

Fix

Update Siemens scalance s602 firmware to 4.1
Vendor fix CISA ICSA-20-042-10 · 4 productsUpdate to V4.1
Mitigation from the vendor CISA ICSA-20-042-10 · 4 productsUpgrade hardware to successor product from SCALANCE SC-600 family (https://support.industry.siemens.com/cs/document/109756957) and apply patches when available, or follow recommendations from section Workarounds and Mitigations
Mitigation from the vendor CISA ICSA-20-042-10 · 4 productsOnly access links from trusted sources in the browser you use to access the SCALANCE S-600 administration website.

Advisories and patches

cert-portal.siemens.comVendor Advisory

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

NVDCVSS 3.17.5read 2026-10-23
NVDCVSS 2.07.8read 2026-10-23
CNAweakness (CWE)CWE-400read 2026-10-23
NVDweakness (CWE)CWE-400read 2026-10-23
FIRST EPSSEPSS score1.5 %2026-10-22

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published: 2020-02-11
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2019-13926?

Is CVE-2019-13926 actively exploited?

Active exploitation of CVE-2019-13926 has not been confirmed. Its EPSS score was 1.5% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2019-13926?

CVE-2019-13926 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Running SCALANCE S602 (All versions >=? Hear about its next vulnerability

Surveillance reads the versions in your stack — a domain, a lockfile or a list — checks each CVE against the ranges its sources publish, and alerts you when one you run is exploited or enters CISA KEV. A version it cannot read stays « version not verified ».

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