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CVE Vulnerability Details :
CVE-2026-8741
PUBLISHED
More InfoOfficial Page
Assigner-VulDB
Assigner Org ID-1af790b2-7ee1-4545-860a-a788eba489b5
View Known Exploited Vulnerability (KEV) details
Published At-17 May, 2026 | 08:15
Updated At-18 May, 2026 | 17:53
Rejected At-
▼CVE Numbering Authority (CNA)
EMQX QoS 2 PUBLISH Packet emqx_persistent_session_ds.erl race condition

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.

Affected Products
Vendor
n/a
Product
EMQX
CPEs
  • cpe:2.3:a:emqx:emqx:*:*:*:*:*:*:*:*
Modules
  • QoS 2 PUBLISH Packet Handler
Versions
Affected
  • 6.0
  • 6.1
  • 6.2.0
Problem Types
TypeCWE IDDescription
CWECWE-362Race Condition
Type: CWE
CWE ID: CWE-362
Description: Race Condition
Metrics
VersionBase scoreBase severityVector
4.02.3LOW
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
3.13.1LOW
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R
3.03.1LOW
CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R
2.02.1N/A
AV:N/AC:H/Au:S/C:N/I:N/A:P/E:POC/RL:ND/RC:UR
Version: 4.0
Base score: 2.3
Base severity: LOW
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
Version: 3.1
Base score: 3.1
Base severity: LOW
Vector:
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R
Version: 3.0
Base score: 3.1
Base severity: LOW
Vector:
CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R
Version: 2.0
Base score: 2.1
Base severity: N/A
Vector:
AV:N/AC:H/Au:S/C:N/I:N/A:P/E:POC/RL:ND/RC:UR
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
reporter
CCCaaa (VulDB User)
coordinator
VulDB CNA Team
Timeline
EventDate
Advisory disclosed2026-05-16 00:00:00
VulDB entry created2026-05-16 02:00:00
VulDB entry last update2026-05-16 13:24:18
Event: Advisory disclosed
Date: 2026-05-16 00:00:00
Event: VulDB entry created
Date: 2026-05-16 02:00:00
Event: VulDB entry last update
Date: 2026-05-16 13:24:18
Replaced By
Rejected Reason
References
HyperlinkResource
https://vuldb.com/vuln/364329
vdb-entry
https://vuldb.com/vuln/364329/cti
signature
permissions-required
https://vuldb.com/submit/809931
third-party-advisory
https://github.com/Pathfind-tama/Report_EMQX_MQTT
related
https://github.com/Pathfind-tama/Report_EMQX_MQTT/blob/main/MQTT%20QoS%202%20Message%20Duplication%20in%20Persistent%20Sessions.md
exploit
Hyperlink: https://vuldb.com/vuln/364329
Resource:
vdb-entry
Hyperlink: https://vuldb.com/vuln/364329/cti
Resource:
signature
permissions-required
Hyperlink: https://vuldb.com/submit/809931
Resource:
third-party-advisory
Hyperlink: https://github.com/Pathfind-tama/Report_EMQX_MQTT
Resource:
related
Hyperlink: https://github.com/Pathfind-tama/Report_EMQX_MQTT/blob/main/MQTT%20QoS%202%20Message%20Duplication%20in%20Persistent%20Sessions.md
Resource:
exploit
▼Authorized Data Publishers (ADP)
CISA ADP Vulnrichment
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
Details not found