CVE-2019-19301

mediumpriority · track · 20EPSS 0.014 · 72 %ileDEEUUS
grimoire priorityP3 · Track
Exploitable?
—
no known exploitation
Likely / severe?
1.36% (72nd) EPSS
CVSS 5 · medium
Is it mine?
448 products
Check your exposure
Who says so?
4 sources
cnnvd · enisa_euvd · cisa_csaf_ot · siemens_psirt

EPSS · scored 2026-10-27

A vulnerability has been identified in SCALANCE X200-4P IRT, SCALANCE X201-3P IRT, SCALANCE X201-3P IRT PRO, SCALANCE X202-2IRT, SCALANCE X202-2P IRT, SCALANCE X202-2P IRT PRO, SCALANCE X204-2, SCALANCE X204-2FM, SCALANCE X204-2LD, SCALANCE X204-2LD TS, SCALANCE X204-2TS, SCALANCE X204IRT, SCALANCE X204IRT PRO, SCALANCE X206-1, SCALANCE X206-1LD, SCALANCE X208, SCALANCE X208PRO, SCALANCE X212-2, SCALANCE X212-2LD, SCALANCE X216, SCALANCE X224, SCALANCE X302-7 EEC (230V, coated), SCALANCE X302-7 EEC (230V), SCALANCE X302-7 EEC (24V, coated), SCALANCE X302-7 EEC (24V), SCALANCE X302-7 EEC (2x 230V, coated), SCALANCE X302-7 EEC (2x 230V), SCALANCE X302-7 EEC (2x 24V, coated), SCALANCE X302-7 EEC (2x 24V), SCALANCE X304-2FE, SCALANCE X306-1LD FE, SCALANCE X307-2 EEC (230V, coated), SCALANCE X307-2 EEC (230V), SCALANCE X307-2 EEC (24V, coated), SCALANCE X307-2 EEC (24V), SCALANCE X307-2 EEC (2x 230V, coated), SCALANCE X307-2 EEC (2x 230V), SCALANCE X307-2 EEC (2x 24V, coated), SCALANCE X307-2 EEC (2x 24V), 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 XF201-3P IRT, SCALANCE XF202-2P IRT, SCALANCE XF204, SCALANCE XF204-2, SCALANCE XF204-2BA IRT, SCALANCE XF204IRT, SCALANCE XF206-1, SCALANCE XF208, 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), SIMATIC CP 343-1 Advanced, SIMATIC CP 442-1 RNA, SIMATIC CP 443-1, SIMATIC CP 443-1, SIMATIC CP 443-1 Advanced, SIMATIC CP 443-1 RNA, SIMATIC RF180C, SIMATIC RF182C, SIPLUS NET CP 343-1 Advanced, SIPLUS NET CP 443-1, SIPLUS NET CP 443-1 Advanced, SIPLUS NET SCALANCE X308-2. The VxWorks-based Profinet TCP Stack can be forced to make very expensive calls for every incoming packet which can lead to a denial of service.

01

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

02

cvss

Technical severity, 0–10. One row per scoring source.

7.5
010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 4.3–7.5

v2.05mediumAV:N/AC:L/Au:N/C:N/I:N/A:Pprimary · NVD / NIST USexploitability 10 · impact 2.9
v2.04.3mediumAV:N/AC:L/Au:N/C:N/I:N/A:P/E:Usecondary · CVSS-BT (t0sche)
v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:U/RC:Csecondary · CISA US
v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · productcert@siemens.com DEexploitability 3.9 · impact 3.6
v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:U/RC:Csecondary · Siemens ProductCERT DE
v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:U/RC:Csecondary · ENISA EU
v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · NVD / NIST USexploitability 3.9 · impact 3.6
03

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-400USCWE-400USCWE-400US
04

affected products (448)

Products and version ranges known to be affected.

showing 20 of 448
05

advisories (2)

Vendor and ecosystem advisories describing this.

  • SSA-102233SSA-102233: SegmentSmack in VxWorks-based Industrial Devices2020-04-14csaf · siemens_psirtDE

    The products listed below contain a vulnerability that could allow remote attackers to affect the availability of the devices under certain conditions. The underlying TCP stack can be forced to make very computation expensive calls for every incoming packet which can lead to a Denial-of-Service. Siemens has released updates for several affected products and recommends to update to the latest versions. Siemens recommends specific countermeasures for products where updates are not, or not yet available.

  • ICSA-20-105-07Siemens SCALANCE and SIMATIC (Update H)2020-04-14icsa · cisa_csaf_otUS

    The products listed below contain a vulnerability that could allow remote attackers to affect the availability of the devices under certain conditions. The underlying TCP stack can be forced to make very computation expensive calls for every incoming packet which can lead to a Denial-of-Service. Siemens has released updates for several affected products and recommends to update to the latest versions. Siemens recommends specific countermeasures for products where updates are not, or not yet available.

06

also known as (3)

Other names and identifiers for this entity.

07

sources

Which sources assert this record, and when.

cnnvdenisa_euvdcisa_csaf_otsiemens_psirtNVDCVE.orgMITRE
published 2020-04-14modified 2026-06-17
08

references (8)

External citations — patches, advisories, analysis.

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