CVE-2018-8531

highpriority · track · 40EPSS 0.151 · 97 %ileEURUUS

grimoire priorityP1 · Urgent

Exploitable?

—

no known exploitation

Likely / severe?

15.1% (97th) EPSS

CVSS 9.3 · high

Is it mine?

6 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · fstec_bdu · nvd

EPSS · scored 2026-10-28

A remote code execution vulnerability exists in the way that Azure IoT Hub Device Client SDK using MQTT protocol accesses objects in memory, aka "Azure IoT Device Client SDK Memory Corruption Vulnerability." This affects Hub Device Client SDK, Azure IoT Edge.

cvss

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

9.3

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 5.3–9.3

v2.09.3highAV:N/AC:M/Au:N/C:C/I:C/A:Cprimary · NVD / NIST USexploitability 8.6 · impact 10

v3.08.8highCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 2.8 · impact 5.9

v3.08.1highCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

v3.15.3mediumAV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:Nsecondary · FSTEC (BDU) RU

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-787USprimaryCWE-119US

affected products (6)

Products and version ranges known to be affected.

Microsoft Azure IoT Edge≤ Azure IoT Edgeenisa_euvdEU
Microsoft Hub Device Client SDK≤ Azure IoTenisa_euvdEU
Microsoft Corp Azure IoT Edgeall versionsfstec_bduRU
Microsoft Corp Hub Device Client SDK for Azure IoTall versionsfstec_bduRU
microsoft azure internet of things edgeall versionsnvdUScpe:2.3:a:microsoft:azure_internet_of_things_edge:*:*:*:*:*:*:*:*
microsoft csharp software development kitall versionsnvdUScpe:2.3:a:microsoft:csharp_software_development_kit:*:*:*:*:*:*:*:*

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu nvd NVD CVE.org MITRE

published 2018-10-10modified 2026-06-17

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+16140 more

references (7)

External citations — patches, advisories, analysis.

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