CVE-2019-5637

mediumpriority · track · 30EPSS 0.014 · 73 %ileDEEURUUS
grimoire priorityP3 · Track
Exploitable?
—
no known exploitation
Likely / severe?
1.43% (73rd) EPSS
CVSS 5 · medium
Is it mine?
10 products
Check your exposure
Who says so?
5 sources
cnnvd · enisa_euvd · fstec_bdu · beckhoff_psirt

EPSS · scored 2026-10-27

When Beckhoff TwinCAT is configured to use the Profinet driver, a denial of service of the controller could be reached by sending a malformed UDP packet to the device. This issue affects TwinCAT 2 version 2304 (and prior) and TwinCAT 3.1 version 4204.0 (and prior).

01

remediations

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

A vendor fix is available.

  • Fixedbeckhoff_psirt

    Profinet could be blocked in perimeter firewall to block PROFINET DCP packets from untrusted networks to the device. Beckhoff will provide updates for the mentioned TwinCAT Versions.

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 · 5–7.5

v2.05mediumAV:N/AC:L/Au:N/C:N/I:N/A:Pprimary · NVD / NIST USexploitability 10 · impact 2.9
v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 3.6
v3.17.5highAV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · FSTEC (BDU) RU
v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · ENISA EU
v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · cve@rapid7.comexploitability 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:Hsecondary · Beckhoff PSIRT DE
v3.16.9mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:Usecondary · CVSS-BT (t0sche)
03

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-369USprimaryCWE-369USCWE-369US
04

affected products (10)

Products and version ranges known to be affected.

05

advisories (1)

Vendor and ecosystem advisories describing this.

  • VDE-2019-019Beckhoff: TwinCAT Denial-of-Service in Profinet driver2019-10-09csaf · beckhoff_psirtDE

    In case TwinCAT is configured to use the Profinet driver, a denial of service of the controller could be reached by sending special packets to the device.

06

also known as (4)

Other names and identifiers for this entity.

07

sources

Which sources assert this record, and when.

cnnvdenisa_euvdfstec_bdubeckhoff_psirtnvdNVDCVE.orgMITRE
published 2019-11-21modified 2026-06-17
09

references (7)

External citations — patches, advisories, analysis.

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