CVE-2026-22535
FRAIL SECURITY IN MQTT PROTOCOL ALLOWS AN ATTACKER MODIFY CRITICAL PARAMETERS
Description
An attacker with the ability to interact through the network and with access credentials, could, thanks to the unsecured (unencrypted) MQTT communications protocol, write on the server topics of the board that controls the MQTT communications
INFO
Published Date :
Jan. 7, 2026, 5:16 p.m.
Last Modified :
Jan. 8, 2026, 6:08 p.m.
Remotely Exploit :
No
Source :
50b5080a-775f-442e-83b5-926b5ca517b6
Affected Products
The following products are affected by CVE-2026-22535
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 4.0 | HIGH | 50b5080a-775f-442e-83b5-926b5ca517b6 | ||||
| CVSS 4.0 | HIGH | 50b5080a-775f-442e-83b5-926b5ca517b6 |
Solution
- Enable TLS encryption for MQTT connections.
- Implement strong authentication for MQTT clients.
- Configure secure broker access controls.
- Restrict topic access based on roles.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-22535.
| URL | Resource |
|---|---|
| https://cds.thalesgroup.com/en |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-22535 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-22535
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-22535 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-22535 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
New CVE Received by 50b5080a-775f-442e-83b5-926b5ca517b6
Jan. 07, 2026
Action Type Old Value New Value Added Description An attacker with the ability to interact through the network and with access credentials, could, thanks to the unsecured (unencrypted) MQTT communications protocol, write on the server topics of the board that controls the MQTT communications Added CVSS V4.0 AV:A/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CWE CWE-1366 Added Reference https://cds.thalesgroup.com/en