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No exploitation reportedFix available

CVE-2018-18765

No exploitation reported by the sources we read.

  • Published2018-10-29
  • WeaknessCWE-125

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

An exploitable arbitrary memory read vulnerability exists in the MQTT packet-parsing functionality of Cesanta Mongoose 6.13. It is a heap-based buffer over-read in mg_mqtt_next_subscribe_topic. A specially crafted MQTT SUBSCRIBE packet can cause an arbitrary out-of-bounds memory read potentially resulting in information disclosure and denial of service. An attacker needs to send a specially crafted MQTT packet over the network to trigger this vulnerability.

Timeline

dates in UTC
  1. 2018-10-2912:29CVE publishedNVD

Versions per branch

NVD
Cesanta mongoose
BranchAffectedFixed in
6.13= 6.13no fix published

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • smplayerDebian:14all versions · fixed in 18.5.0~ds1-1
  • smplayerDebian:13all versions · fixed in 18.5.0~ds1-1
  • smplayerDebian:12all versions · fixed in 18.5.0~ds1-1

Vendor advisories

  • CVE-2018-18765 Red Hat Product Security1 known affected

    mongoose: heap-based buffer over-read in mg_mqtt_next_subscribe_topic

    nodejs-mongoose as a component of Red Hat Mobile Application Platform 4

Full record on NVD

Fix

  1. No fix planned, says the vendor Red Hat Product Security CVE-2018-18765 · 1 productOut of support scope

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Published
2018-10-29
Last Modified
2026-06-17
NVD status
Modified
GitHub Advisory
GHSA-w62j-xhgm-2ggr

Frequently asked questions

What is CVE-2018-18765?

An exploitable arbitrary memory read vulnerability exists in the MQTT packet-parsing functionality of Cesanta Mongoose 6.13. It is a heap-based buffer over-read in mg_mqtt_next_subscribe_topic. A specially crafted MQTT SUBSCRIBE packet can cause an arbitrary out-of-bounds memory read potentially resulting in information disclosure and denial of service. An attacker needs to send a specially crafted MQTT packet over the network to trigger this vulnerability.

Is CVE-2018-18765 actively exploited?

Active exploitation of CVE-2018-18765 has not been confirmed. Its EPSS score was 1.8% on 2026-11-08, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2018-18765?

CVE-2018-18765 has a CVSS v3 base score of 9.1 (CRITICAL severity), with vector string CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H.

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