CVE-2019-11778

mediumpriority · track · 22EPSS 0.008 · 55 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.76% (55th) EPSS

CVSS 5.5 · medium

Is it mine?

2 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · nvd

EPSS · scored 2026-10-28

If an MQTT v5 client connects to Eclipse Mosquitto versions 1.6.0 to 1.6.4 inclusive, sets a last will and testament, sets a will delay interval, sets a session expiry interval, and the will delay interval is set longer than the session expiry interval, then a use after free error occurs, which has the potential to cause a crash in some situations.

cvss

Technical severity, 0–10. One row per scoring source.

5.5

010

base score 0–10 · higher = more severe · hover a vector to decode

v2.05.5mediumAV:N/AC:L/Au:S/C:N/I:P/A:Pprimary · NVD / NIST USexploitability 8 · impact 4.9

v3.15.4mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:Lprimary · NVD / NIST USexploitability 2.8 · impact 2.5

v3.15mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-416USprimary

affected products (2)

Products and version ranges known to be affected.

The Eclipse Foundation Eclipse Mosquitto≤ 1.6.0 to 1.6.4enisa_euvdEU
eclipse mosquitto1.6 → 1.6.5nvdUScpe:2.3:a:eclipse:mosquitto:*:*:*:*:*:*:*:*

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd NVD CVE.org MITRE

published 2019-09-18modified 2026-06-17

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+12281 more

references (4)

External citations — patches, advisories, analysis.

scry

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