CVE-2026-8741

Exploitation

Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.

SSVC decision

• ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.28% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 20.6% of scored records. A rank, not a probability.

NVD base score

1.3 (CVSS v4.0), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/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

NVD analysis status

Analyzed. NVD last modified this record on 2026-06-17.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2026-05-17 08:15Z3 MO AGO

Last updated

2026-05-18 17:53Z3 MO AGO

Reserved

2026-05-16

Assigning CNA

VulDB

Record state

PUBLISHED

Severity

Low (CVSS 2.3)

CNA CVSS vector

CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P

Weaknesses

• CWE-362Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')Class

Data version

5.2

Document digest

f2748f9505a7f1ee42d0c91a31c9616589abdaba0994d82c0741dddc1cbd6b2a

• vuldb.comVDB-364329 | EMQX QoS 2 PUBLISH Packet emqx_persistent_session_ds.erl race conditionhttps://vuldb.com/vuln/364329vdb-entry
• vuldb.comVDB-364329 | CTI Indicators (IOB, IOC, IOA)https://vuldb.com/vuln/364329/ctisignaturepermissions-required
• vuldb.comSubmit #809931 | EMQX EMQX Broker EMQX 6.1.0 (confirmed) Race Conditionhttps://vuldb.com/submit/809931third-party-advisory
• github.comhttps://github.com/Pathfind-tama/Report_EMQX_MQTTrelated
• github.comhttps://github.com/Pathfind-tama/Report_EMQX_MQTT/blob/main/MQTT%20QoS%202%20Message%20Duplication%20in%20Persistent%20Sessions.mdexploit