HOMEVULNERABILITIESCVE-2026-8741
LOW

CVE-2026-8741

CWE-362Published: May 17, 2026· Updated: May 20, 2026

3.1
CVSS v3.1
EPSS:0.04%probability of exploitation in 30 daysPercentile:10.6th

Official 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.

NVD Source

Technical Analysis

CVE-2026-8741 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityHigh
Privileges Req.Low
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityNone
AvailabilityLow
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L

Affected Vendors & Products

emqx1 product
emqx
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://github.com/Pathfind-tama/Report_EMQX_MQTT
ADVISORYhttps://github.com/Pathfind-tama/Report_EMQX_MQTT/blob/main/MQTT%20QoS%202%20Message%20Duplication%20in%20Persistent%20Sessions.md
ADVISORYhttps://vuldb.com/submit/809931
ADVISORYhttps://vuldb.com/vuln/364329

All References (5)

→
https://github.com/Pathfind-tama/Report_EMQX_MQTTThird Party Advisory
→
https://github.com/Pathfind-tama/Report_EMQX_MQTT/blob/main/MQTT%20QoS%202%20Message%20Duplication%20in%20Persistent%20Sessions.mdThird Party Advisory · Exploit · Mitigation
→
https://vuldb.com/submit/809931Third Party Advisory · VDB Entry
→
https://vuldb.com/vuln/364329Third Party Advisory · VDB Entry
→
https://vuldb.com/vuln/364329/ctiPermissions Required · VDB Entry

Quick Facts

CVE IDCVE-2026-8741
CVSS Score3.1 / 10
SeverityLOW
WeaknessCWE-362
CISA KEVNo
EPSS (30d)0.04%
Affected1 vendor
PublishedMay 17, 2026

Related CVEs (CWE-362)

CVE-2026-5902
9.8
CVE-2025-10263
9.1
CVE-2026-20677
9.0
CVE-2025-32991
9.0
CVE-2026-44693
8.8
CVE-2026-26167
8.8

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2026-8741 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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