CVE-2023-6545

mediumpriority · track · 0EPSS 0.004 · 37 %ileDEEURUUS
grimoire priorityP3 · Track
Exploitable?
—
no known exploitation
Likely / severe?
0.43% (37th) EPSS
CVSS 4.7 · medium
Is it mine?
5 products
Check your exposure
Who says so?
5 sources
cnnvd · enisa_euvd · fstec_bdu · beckhoff_psirt

EPSS · scored 2026-10-26

The package authelia-bhf included in Beckhoffs TwinCAT/BSD is prone to an open redirect that allows a remote unprivileged attacker to redirect a user to another site. This may have limited impact to integrity and does solely affect anthelia-bhf the Beckhoff fork of authelia.

01

remediations

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

A vendor fix is available.

  • FixedFirmware <4.37.5 installed on authelia-bhf included in TwinCAT/BSDbeckhoff_psirt

    Please update to a recent version of the affected product.

  • MitigationFirmware <4.37.5 installed on authelia-bhf included in TwinCAT/BSDbeckhoff_psirt

    Use firewall or web-proxy technology at your network perimeter which allow internal clients to access only trusted external sites directly.

02

cvss

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

4.7
010

base score 0–10 · higher = more severe · hover a vector to decode

v3.14.7mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:Nsecondary · NVD / NIST USexploitability 2.8 · impact 1.4
v3.14.3mediumAV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:Nsecondary · FSTEC (BDU) RU
v3.14.7mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:Nsecondary · ENISA EU
v3.14.7mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:Nsecondary · info@cert.vde.comexploitability 2.8 · impact 1.4
v3.14.3mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:Nsecondary · Beckhoff PSIRT DE
03

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Trackcoordinatorcisa_ssvcUS
04

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-601USCWE-601USCWE-601US
05

affected products (5)

Products and version ranges known to be affected.

06

advisories (1)

Vendor and ecosystem advisories describing this.

  • VDE-2023-067Beckhoff: Open redirect in TwinCAT/BSD package authelia-bhf2023-12-13csaf · beckhoff_psirtDE

    With TwinCAT/BSD based products the HTTPS request to the Authelia login page accepts user-controlled input that specifies a link to an external site.

07

also known as (4)

Other names and identifiers for this entity.

08

sources

Which sources assert this record, and when.

cnnvdenisa_euvdfstec_bdubeckhoff_psirtnvdNVDCVE.orgMITRE
published 2023-12-14modified 2026-06-17
09

references (7)

External citations — patches, advisories, analysis.

scry

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