Read the docs
TI-2025-37335 Aliases CVE-2025-59947

NanoMQ has Buffer Overflow

Priority LOW 37CWE-120Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
Passive
Attack complexity
Low
Attack requirements
None
Impact type
—
Confidentiality · integrity · availability
Low · High · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

Summary

NanoMQ is a messaging broker/bus for IoT Edge & SDV. Versions prior to 0.24.4 have a buffer overflow case while the PUBLISH packets trigger both shared subscription and vanila subscription. This is fixed in version 0.24.4. As a workaround, disable shared subscription.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00326 25th percentileScored 2026-11-07
Fix Fixed nanomq (nanomq): 0.24.4

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
nanomqnanomqbefore 0.24.40.24.4Patch availableCNA
  • nanomq Vendornanomq Affected before 0.24.4 Fixed in 0.24.4 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:emqx:nanomq:*:*:*:*:*:*:*:*before 0.24.4Vulnerablenanomq
  • cpe:2.3:a:emqx:nanomq:*:*:*:*:*:*:*:* Versions before 0.24.4 Vulnerable ·nanomq

Remediation

  • Fix · CNA nanomq (nanomq) Fixed in 0.24.4

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-59947

References

Patch 2

Advisory 1

  • TI-2026-24672 NanoMQ has Heap Buffer Overflow in URI Parameter Parsing CVSS 4.0HIGH 7.7
  • TI-2024-28570 An access control issue in NanoMQ v0.21.10 allows attackers to bypass security… CVSS 3.1HIGH 8.8
  • TI-2026-27853 An issue in EMQ NanoMQ v.0.24.9 allows a remote attacker to cause a denial of service via… CVSS 3.1HIGH 7.5
  • TI-2026-17589 MQTT v5 Variable Byte Integer parsing out-of-bounds: get_var_integer() CVSS 3.1HIGH 7.5
  • TI-2024-20452 Null Pointer Dereference vulnerability in topic_filtern function in mqtt_parser.c in… CVSS 3.1HIGH 7.5
  • TI-2023-17307 NanoMQ 0.16.5 is vulnerable to heap-use-after-free in the nano_ctx_send function of nmq_mqtt.c. CVSS 3.1HIGH 7.5
See all 32 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences