How severe is CVE-2026-8741?

CVE-2026-8741 has a CVSS 3.x base score of 3.1, rated low severity. It is exploitable over network with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.

Is CVE-2026-8741 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (20th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-8741?

CVE-2026-8741 affects Emqx. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-8741?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-8741 have an EU (EUVD) identifier?

Yes. CVE-2026-8741 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-30692.

When was CVE-2026-8741 published?

CVE-2026-8741 was published on 2026-05-17 and last updated on 2026-06-17.

CVE-2026-8741

CVE-2026-8741 is a low-severity vulnerability in Emqx with a CVSS 3.x base score of 3.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-362.

Key facts

Severity: Low (CVSS 3.x base score 3.1)
CVSS v2: 2.1
CVSS v4: 1.3
EPSS exploit prediction: 0% (20th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-30692
Weakness: CWE-362
Affected product: Emqx
Published: 2026-05-17
Last modified: 2026-06-17

Description

A vulnerability has been found in EMQX up to 6.2.0. This affects an unknown function of the file apps/emqx/src/emqx_persistent_session_ds.erl of the component QoS 2 PUBLISH Packet Handler. Such manipulation leads to race condition. The attack may be performed from remote. A high complexity level is associated with this attack. The exploitability is reported as difficult. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure.

Frequently asked questions

What is CVE-2026-8741?: A vulnerability has been found in EMQX up to 6.2.0. This affects an unknown function of the file apps/emqx/src/emqx_persistent_session_ds.erl of the component QoS 2 PUBLISH Packet Handler. Such manipulation leads to race condition. The attack may be performed from remote. A high complexity level is associated with this attack. The exploitability is reported as difficult. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure.
How severe is CVE-2026-8741?: CVE-2026-8741 has a CVSS 3.x base score of 3.1, rated low severity. It is exploitable over network with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.
Is CVE-2026-8741 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (20th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-8741?: CVE-2026-8741 affects Emqx. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-8741?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-8741 have an EU (EUVD) identifier?: Yes. CVE-2026-8741 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-30692.
When was CVE-2026-8741 published?: CVE-2026-8741 was published on 2026-05-17 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:emqx:emqx:*:*:*:*:*:*:*:*

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