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Fencer Intel
high 7.5

CVE-2016-10523 json

Denial of Service in mqtt-packet

published 2018-05-31 8 y ago modified 2026-06-17 4 mo ago also GHSA-g3r2-65gc-qpqc , EUVD-2019-0286

cvss
7.5
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.4%
EPSS 2.4% chance of exploitation in 30 days, percentile 83%
public exploits
0
none known

Summary

MQTT before 3.4.6 and 4.0.x before 4.0.5 allows specifically crafted MQTT packets to crash the application, making a DoS attack feasible with very little bandwidth.

Patch / fix

  • npm mqtt-packet 3.4.6, 4.0.5
  • mqtt-packet_project mqtt-packet 3.4.6, 4.0.5

Exploit prediction

2.38% chance of exploitation in the next 30 days, higher than 83% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • github.com https://github.com/mqttjs/mqtt-packet/pull/8 referenced PoC, tagged "exploit" by a source, unverified
  • github.com https://github.com/mcollina/mosca/issues/393 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.0 7.5 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:N/A:P

Affected packages

ecosystem package affected fixed in
npm mqtt-packet
<3.4.6
>=4.0.0, <4.0.5
3.4.6
4.0.5

Affected products

  • HackerOne mqtt-packet node module

Classification

Weakness
  • CWE-400 Uncontrolled Resource Consumption
  • CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.