CVE-2023-1083
Welotec: improper access control in TK500v1 router series
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
Welotec: improper access control in TK500v1 router series
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.
- Record
CVE-2023-1083- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-306
- Updated
- 2026-11-02
EUVDEUVD-2023-23370
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.
- Record
EUVD-2023-23370- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-73qm-xvq7-vqwg
An unauthenticated remote attacker who is aware of a MQTT topic name can send and receive...
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.
- Record
GHSA-73qm-xvq7-vqwg- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-284, CWE-306
- Updated
- 2026-11-02
NVD
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.
- Record
CVE-2023-1083- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-306
- Updated
- 2026-11-02
Affected products
- welotec tk515l
- welotec tk515l set
- welotec tk515l-w
- welotec tk515l-w set
- welotec tk525l
- welotec tk525l set
- welotec tk525l-w
- welotec tk525l-w set
- welotec tk525u
- welotec tk525u set
- welotec tk525w
- welotec tk525w set
Show 2 moreShow less
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases, published | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2023-1083 is a critical vulnerability (CVSS 9.8) in Welotec Tk515l, published April 9, 2024. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.68%, the 52nd percentile. No source names a fixed version.