CVE-2019-13933· NVD / CVE Program· CNA siemens

A vulnerability has been identified in SCALANCE X204RNA (HSR), SCALANCE X204RNA (PRP), SCALANCE X204RNA EEC (HSR), SCALANCE X204RNA EEC (PRP

A vulnerability has been identified in SCALANCE X204RNA (HSR), SCALANCE X204RNA (PRP), SCALANCE X204RNA EEC (HSR), SCALANCE X204RNA EEC (PRP), SCALANCE X204RNA EEC (PRP/HSR), SCALANCE X302-7 EEC (230V), SCALANCE X302-7 EEC (230V, coated), SCALANCE X302-7 EEC (24V), SCALANCE X302-7 EEC (24V, coated), SCALANCE X302-7 EEC (2x 230V), SCALANCE X302-7 EEC (2x 230V, coated), SCALANCE X302-7 EEC (2x 24V), SCALANCE X302-7 EEC (2x 24V, coated), SCALANCE X304-2FE, SCALANCE X306-1LD FE, SCALANCE X307-2 EEC (230V), SCALANCE X307-2 EEC (230V, coated), SCALANCE X307-2 EEC (24V), SCALANCE X307-2 EEC (24V, coated), SCALANCE X307-2 EEC (2x 230V), SCALANCE X307-2 EEC (2x 230V, coated), SCALANCE X307-2 EEC (2x 24V), SCALANCE X307-2 EEC (2x 24V, coated), SCALANCE X307-3, SCALANCE X307-3, SCALANCE X307-3LD, SCALANCE X307-3LD, SCALANCE X308-2, SCALANCE X308-2, SCALANCE X308-2LD, SCALANCE X308-2LD, SCALANCE X308-2LH, SCALANCE X308-2LH, SCALANCE X308-2LH+, SCALANCE X308-2LH+, SCALANCE X308-2M, SCALANCE X308-2M, SCALANCE X308-2M PoE, SCALANCE X308-2M PoE, SCALANCE X308-2M TS, SCALANCE X308-2M TS, SCALANCE X310, SCALANCE X310, SCALANCE X310FE, SCALANCE X310FE, SCALANCE X320-1 FE, SCALANCE X320-1-2LD FE, SCALANCE X408-2, SCALANCE XR324-12M (230V, ports on front), SCALANCE XR324-12M (230V, ports on front), SCALANCE XR324-12M (230V, ports on rear), SCALANCE XR324-12M (230V, ports on rear), SCALANCE XR324-12M (24V, ports on front), SCALANCE XR324-12M (24V, ports on front), SCALANCE XR324-12M (24V, ports on rear), SCALANCE XR324-12M (24V, ports on rear), SCALANCE XR324-12M TS (24V), SCALANCE XR324-12M TS (24V), SCALANCE XR324-4M EEC (100-240VAC/60-250VDC, ports on front), SCALANCE XR324-4M EEC (100-240VAC/60-250VDC, ports on front), SCALANCE XR324-4M EEC (100-240VAC/60-250VDC, ports on rear), SCALANCE XR324-4M EEC (100-240VAC/60-250VDC, ports on rear), SCALANCE XR324-4M EEC (24V, ports on front), SCALANCE XR324-4M EEC (24V, ports on front), SCALANCE XR324-4M EEC (24V, ports on rear), SCALANCE XR324-4M EEC (24V, ports on rear), SCALANCE XR324-4M EEC (2x 100-240VAC/60-250VDC, ports on front), SCALANCE XR324-4M EEC (2x 100-240VAC/60-250VDC, ports on front), SCALANCE XR324-4M EEC (2x 100-240VAC/60-250VDC, ports on rear), SCALANCE XR324-4M EEC (2x 100-240VAC/60-250VDC, ports on rear), SCALANCE XR324-4M EEC (2x 24V, ports on front), SCALANCE XR324-4M EEC (2x 24V, ports on front), SCALANCE XR324-4M EEC (2x 24V, ports on rear), SCALANCE XR324-4M EEC (2x 24V, ports on rear), SCALANCE XR324-4M PoE (230V, ports on front), SCALANCE XR324-4M PoE (230V, ports on rear), SCALANCE XR324-4M PoE (24V, ports on front), SCALANCE XR324-4M PoE (24V, ports on rear), SCALANCE XR324-4M PoE TS (24V, ports on front), SIPLUS NET SCALANCE X308-2. Affected devices contain a vulnerability that allows an unauthenticated attacker to violate access-control rules. The vulnerability can be triggered by sending GET request to specific uniform resource locator on the web configuration interface of the device. The security vulnerability could be exploited by an attacker with network access to the affected systems. An attacker could use the vulnerability to obtain sensitive information or change the device configuration. At the time of advisory publication no public exploitation of this security vulnerability was known.

HighCVSS 8.6 · v3.1—No exploit No fix recorded

BDU:2020-01386

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Published: Jan 16, 2020
Updated: Jun 16, 2026
EPSS: 1.4% · 71th percentile
CWE: CWE-306

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Action score

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Low priority for now.

CVSS: 34 / 40 · 8.6 / 10
CISA KEV: 0 / 30 · Not listed
EPSS: 0 / 30 · 1.4%

Affected systems

Vendor	Product	CPE
siemens	scalance x-200rna firmware	cpe:2.3:o:siemens:scalance_x-200rna_firmware
siemens	scalance x-200rna	cpe:2.3:h:siemens:scalance_x-200rna
siemens	scalance x204rna firmware	cpe:2.3:o:siemens:scalance_x204rna_firmware
siemens	scalance x204rna	cpe:2.3:h:siemens:scalance_x204rna
siemens	scalance x-300 firmware	cpe:2.3:o:siemens:scalance_x-300_firmware
siemens	scalance x-300	cpe:2.3:h:siemens:scalance_x-300
siemens	scalance xr-300wg firmware	cpe:2.3:o:siemens:scalance_xr-300wg_firmware
siemens	scalance xr-300wg	cpe:2.3:h:siemens:scalance_xr-300wg
siemens	scalance xr-300 firmware	cpe:2.3:o:siemens:scalance_xr-300_firmware
siemens	scalance xr-300	cpe:2.3:h:siemens:scalance_xr-300
siemens	scalance x408-2 firmware	cpe:2.3:o:siemens:scalance_x408-2_firmware
siemens	scalance x408-2	cpe:2.3:h:siemens:scalance_x408-2

and 2 more

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

siemens scalance x-200rna firmwareall versions
siemens scalance x-300 firmwarebefore 4.1.3
siemens scalance x204rna firmwareall versions
siemens scalance x408-2 firmwarebefore 4.1.3
siemens scalance xr-300 firmwarebefore 4.1.3
siemens scalance xr-300wg firmwarebefore 4.1.3
siemens siplus net csm 1277 firmwarebefore 4.1.3

Versions reported by the vendor

Affected version ranges reported by the assigning authority (siemens). Independent of NVD's CPE analysis and usually ahead of it.

Siemens SCALANCE X204RNA (HSR)
- All versions < V3.2.7affected
Siemens SCALANCE X204RNA (PRP)
- All versions < V3.2.7affected
Siemens SCALANCE X204RNA EEC (HSR)
- All versions < V3.2.7affected
Siemens SCALANCE X204RNA EEC (PRP)
- All versions < V3.2.7affected
Siemens SCALANCE X204RNA EEC (PRP/HSR)
- All versions < V3.2.7affected
Siemens SCALANCE X302-7 EEC (230V, coated)
- All versions < V4.1.3affected
Siemens SCALANCE X302-7 EEC (230V)
- All versions < V4.1.3affected
Siemens SCALANCE X302-7 EEC (24V, coated)
- All versions < V4.1.3affected
Siemens SCALANCE X302-7 EEC (24V)
- All versions < V4.1.3affected
Siemens SCALANCE X302-7 EEC (2x 230V, coated)
- All versions < V4.1.3affected
Siemens SCALANCE X302-7 EEC (2x 230V)
- All versions < V4.1.3affected
Siemens SCALANCE X302-7 EEC (2x 24V, coated)
- All versions < V4.1.3affected

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

No fix version is recorded for this entry. Check the references for vendor advisories.

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

Anyone who can reach it over the internet can trigger it.
No account or password is required.
No user action is required.
No special conditions are required; it is repeatable.

If successful

Confidentiality: low · data can be read
Integrity: high · data or configuration can be modified
Availability: low · the service can be disrupted

Attack vector: Network
Attack complexity: Low
Privileges required: None
User interaction: None
Scope: Unchanged
Confidentiality impact: Low
Integrity impact: High
Availability impact: Low

Weakness class (CWE)

CWE-306 · Missing Authentication for Critical Function

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:L

nvd-primary

Root cause

A function added for development or support ships to production without authentication. It often relies on the assumption that it is “only reachable from the internal network.”

The bug in code

The whole CWE-306 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

1// Added for the support team2app.post("/maintenance/reset", resetDevice);

Fixed

1if (config.maintenanceEnabled) {2  app.post(3    "/maintenance/reset",4    requireSession, requireRole("admin"), resetDevice5  );6}

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Attack patterns (CAPEC)

ATT&CK techniques

—

Change log

No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records

Noroxi analysis

No Noroxi analysis for this record yet

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Data sources and verification

CNA: siemens

CVE.org (CNA)Aug 5, 2024, 12:05 AM UTC
NVDJun 16, 2026, 10:17 PM UTC
FIRST EPSSSep 29, 2026, 12:00 AM UTC

Each line is when that source was last processed for this record.

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