CVE-2023-1083

criticalpriority · track · 0OT risk · elevatedEPSS 0.007 · 52 %ileDEEU

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.68% (52nd) EPSS

CVSS 9.8 · critical

Is it mine?

42 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · welotec_psirt

EPSS · scored 2026-10-23

An unauthenticated remote attacker who is aware of a MQTT topic name can send and receive messages, including GET/SET configuration commands, reboot commands and firmware updates.

remediations

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

No vendor fix yet; a mitigation is available.

Mitigationwelotec_psirt
Update the product to firmware v2.3.0.r5542 or later.

cvss

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

9.8

010

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

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · ENISA EU

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · info@cert.vde.comexploitability 3.9 · impact 5.9

v3.19criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · Welotec PSIRT

ssvc

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

Exploitation: none · Automatable: yes · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-284USCWE-306US

affected products (42)

Products and version ranges known to be affected.

Welotec TK515L0 → v2.3.0.r5542enisa_euvdEU
Welotec TK515L Set0 → v2.3.0.r5542enisa_euvdEU
Welotec TK515L-W0 → v2.3.0.r5542enisa_euvdEU
Welotec TK515L-W Set0 → v2.3.0.r5542enisa_euvdEU
Welotec TK525L0 → v2.3.0.r5542enisa_euvdEU
Welotec TK525L Set0 → v2.3.0.r5542enisa_euvdEU
Welotec TK525L-W0 → v2.3.0.r5542enisa_euvdEU
Welotec TK525L-W Set0 → v2.3.0.r5542enisa_euvdEU
Welotec TK525U0 → v2.3.0.r5542enisa_euvdEU
Welotec TK525U Set0 → v2.3.0.r5542enisa_euvdEU
Welotec TK525W0 → v2.3.0.r5542enisa_euvdEU
Welotec TK525W Set0 → v2.3.0.r5542enisa_euvdEU
Welotec TK535L10 → v2.3.0.r5542enisa_euvdEU
Welotec TK535L1 Set0 → v2.3.0.r5542enisa_euvdEU
Welotec Firmware Router TK500v1 <v2.3.0.r5542 installed on Welotec Hardware Router TK500v1 TK515Lall versionswelotec_psirtDE
Welotec Firmware Router TK500v1 <v2.3.0.r5542 installed on Welotec Hardware Router TK500v1 TK515L Setall versionswelotec_psirtDE
Welotec Firmware Router TK500v1 <v2.3.0.r5542 installed on Welotec Hardware Router TK500v1 TK515L-Wall versionswelotec_psirtDE
Welotec Firmware Router TK500v1 <v2.3.0.r5542 installed on Welotec Hardware Router TK500v1 TK515L-W Setall versionswelotec_psirtDE
Welotec Firmware Router TK500v1 <v2.3.0.r5542 installed on Welotec Hardware Router TK500v1 TK525Lall versionswelotec_psirtDE
Welotec Firmware Router TK500v1 <v2.3.0.r5542 installed on Welotec Hardware Router TK500v1 TK525L Setall versionswelotec_psirtDE

showing 20 of 42

advisories (1)

Vendor and ecosystem advisories describing this.

VDE-2024-009Welotec: Two vulnerabilities in TK500v1 router series2024-04-09csaf · welotec_psirtDE
Welotec has closed two vulnerabilities in the TK500v1 router series and advises to update the routers to firmware version r5542 or later. An exploitation of the vulnerabilities can allow an attacker to manipulate the device.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd welotec_psirt NVD CVE.org MITRE

published 2024-04-09modified 2026-06-17

references (4)

External citations — patches, advisories, analysis.

scry

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