CVE & CISA-KEV Catalog

CVE-2026-44091

CRITICAL
9.1
CVSS v3
NVD

Description

An unauthenticated remote attacker can post a malicious ID to the MQTT Broker results in the creation of a new configuration entry in the system configuration. This may lead to integrity and availability loss.

How to fix

No published remediation has been found for this vulnerability's affected products yet.

Mitigation guidance may be in the linked vendor advisories in the References section below.

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CVSS v3 Vector

Exploitability

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged

Impact

ConfidentialityNone
IntegrityHigh
AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

Exploit Intelligence

0.33%probability of exploitation in 30 days
25thpercentile

Low risk: more likely to be exploited than 25% of all known CVEs.

References

Other references1

Related Vulnerabilities

Other CWE-501 vulnerabilities, ordered by exploit likelihood. View all

CVESeverityCVSSEPSSExploitedFix
CVE-2025-61884High7.598%KEV + Ransom-
CVE-2025-64496High7.37.8%-Fix
CVE-2024-3661High7.64.1%-Fix
CVE-2026-27893High8.81.3%-Fix
CVE-2024-49050High8.81.2%-Fix
CVE-2026-48746Critical9.11.2%-Fix

Common questions

How do I fix CVE-2026-44091?

No published fix for CVE-2026-44091 has been found yet. Check the linked vendor advisories for guidance as it becomes available.

Is CVE-2026-44091 being actively exploited?

Not that we know of. CVE-2026-44091 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.33% is the estimated probability that it will be exploited in the next 30 days. That is higher than 25% of all scored CVEs.

How severe is CVE-2026-44091?

CVE-2026-44091 has a CVSS v3 base score of 9.1, rated critical. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-07-31.