CVE-2021-34594

highPriorität · verfolgen · 26EPSS 0.011 · 66. PerzentilDEEURUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

1.13% (66th) EPSS

CVSS 8.5 · high

Is it mine?

12 products

Prüfe deine Angriffsfläche

Who says so?

5 sources

cnnvd · enisa_euvd · fstec_bdu · beckhoff_psirt

EPSS · bewertet 2026-10-27

TwinCAT OPC UA Server in TF6100 and TS6100 in product versions before 4.3.48.0 or with TcOpcUaServer versions below 3.2.0.194 are prone to a relative path traversal that allow administrators to create or delete any files on the system.

Behebungen

Hersteller-Fix, Mitigation oder Workaround, wie von den Quellen veröffentlicht.

Ein Hersteller-Fix ist verfügbar.

Behobenbeckhoff_psirt
Please update to a recent version of the affected product.
Mitigationbeckhoff_psirt
Consider restricting access to the nodes of the 'TcOpcUAServer' with the methods described by https://infosys.beckhoff.com/content/1033/tcopcuaserver/5930038411-1.html such that the administrative interface can only be accessed by administrative users of well known OPC UA clients.

cvss

Technischer Schweregrad, 0–10. Eine Zeile je Quelle.

8.5

010

Basiswert 0–10 · höher = schwerwiegender · Vektor überfahren zum Auflösen⚠ Quellen uneinig · medium–high · 6–8.5

v2.08.5highAV:N/AC:L/Au:S/C:N/I:C/A:Cprimary · NVD / NIST USAusnutzbarkeit 8 · Auswirkung 9.2

v3.16.5mediumCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:Hprimary · NVD / NIST USAusnutzbarkeit 1.2 · Auswirkung 5.2

v3.16.5mediumAV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:Hsecondary · FSTEC (BDU) RU

v3.16.5mediumCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:Hsecondary · ENISA EU

v3.16.5mediumCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:Hsecondary · info@cert.vde.comAusnutzbarkeit 1.2 · Auswirkung 5.2

v3.16.5mediumCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:Hsecondary · Beckhoff PSIRT DE

v3.16mediumCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

schwächen

Die CWE-Schwächeklassen, zu denen dies gehört.

CWE-22USprimärCWE-23USCWE-23USCWE-23US

betroffene Produkte (12)

Betroffene Produkte und Versionsbereiche.

Firmware 3.2.0.194 installed on TwinCAT OPC UA Server in TF6100 < 4.3.48.0alle Versionenfixedbeckhoff_psirtDE
Firmware 3.2.0.194 installed on TwinCAT OPC UA Server in TS6100 < 4.3.48.0alle Versionenfixedbeckhoff_psirtDE
Firmware <3.2.0.194 installed on TwinCAT OPC UA Server in TF6100 < 4.3.48.0alle Versionenbeckhoff_psirtDE
Firmware <3.2.0.194 installed on TwinCAT OPC UA Server in TS6100 < 4.3.48.0alle Versionenbeckhoff_psirtDE
Beckhoff Automation TwinCAT OPC UA ServerTF6100 → 4.3.48.0enisa_euvdEU
Beckhoff Automation TwinCAT OPC UA ServerTS6100 → 4.3.48.0enisa_euvdEU
Beckhoff Automation TwinCAT OPC UA ServerTcOpcUaServer version → 3.2.0.19423enisa_euvdEU
Beckhoff Automation GmbH & Co. KG TF6100≤ 4.3.48.0fstec_bduRU
Beckhoff Automation GmbH & Co. KG TS6100≤ 4.3.48.0fstec_bduRU
Beckhoff Automation GmbH & Co. KG TcOpcUaServer≤ 3.2.0.194fstec_bduRU
beckhoff tf6100 firmware< 4.3.48.0nvdUScpe:2.3:o:beckhoff:tf6100_firmware:*:*:*:*:*:*:*:*
beckhoff ts6100 firmware< 4.3.48.0nvdUScpe:2.3:o:beckhoff:ts6100_firmware:*:*:*:*:*:*:*:*

Advisories (1)

Hersteller- und Ökosystem-Meldungen dazu.

VDE-2021-051Beckhoff: Relative path traversal vulnerability through TwinCAT OPC UA Server2021-11-04csaf · beckhoff_psirtDE
Through specific nodes of the server configuration interface of the TwinCAT OPC UA Server administrators are able to remotely create and delete any files on the system which the server is running on, though this access should have been restricted to specific directories. In case that configuration interface is combined with not recommended settings to allow anonymous access via the TwinCAT OPC UA Server then this kind of file access is even possible for any unauthenticated user from remote.

auch bekannt als (5)

Weitere Namen und Kennungen dieser Entität.

quellen

Welche Quellen diesen Datensatz belegen und wann.

cnnvd enisa_euvd fstec_bdu beckhoff_psirt nvd NVD CVE.org MITRE

veröffentlicht 2021-11-04geändert 2026-06-17

verwandt (12,529)

Verwandte Einträge.

ID	Schweregrad	EPSS	ausnutzbar	veröffentlicht
CVE-2026-104286US	—OT kritisch	4.57% (92nd)	KEV	2026-10-01
An improper limitation of a pathname to a restricted directory ('path traversal') vulnerability in Fortinet FortiMail 8.0.0 through 8.0.1, FortiMail 7.6.0 through 7.6.6, FortiMail…
CVE-2026-93616US	—OT kritisch	91.6% (100th)	KEV	2026-09-22
A directory traversal and file upload vulnerability allows an unauthenticated attacker to upload and execute arbitrary scripts on Check Point Management Server.
CVE-2026-85706US	—OT kritisch	97.4% (100th)	KEV	2026-09-12
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.7 before 18.11.12, 19.0 before 19.0.9, 19.1 before 19.1.8, 19.2 before 19.2.6, and 19.3 before 19.3.2…
CVE-2026-66384US	—OT kritisch	0.66% (52nd)	KEV	2026-08-12
An authenticated user may write data outside the intended Docker cache path under specific remote-repository conditions.
CVE-2026-59310US	—OT kritisch	2.56% (85th)	KEV	2026-07-30
VMware vCenter contains a directory traversal vulnerability in the Syslog server. A malicious actor with network access to vCenter may exploit this issue to execute arbitrary code.

+12524 weitere

Referenzen (5)

Externe Belege — Patches, Meldungen, Analysen.

scry

Angreifer nutzen Schwachstellen wie diese gegen im Internet exponierte Dienste aus. Sehen Sie mit einem kostenlosen Passiv-Scan, was exponiert ist.

Kostenloser Scan