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CVE-2020-17002

29
FAUCET Score

CVE-2020-17002 describes a critical security feature bypass vulnerability within the Microsoft C SDK for Azure IoT. This flaw, with a CVSS score of 9.1, allows an unauthenticated attacker to remotely compromise confidentiality and integrity with low attack complexity. While no public exploit code or active exploitation has been confirmed, the vulnerability has garnered some community discussion and media coverage, indicating awareness within the security community.

Impacted Technologies

VendorProductVersion(s)CPE
< lts_07_2020_ref02CPE matchmatch criteria
cpe:2.3:a:microsoft:c_sdk_for_azure_iot:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.4HIGH

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
2.2
Impact Score
5.2
CvssVersion
3.1

Exploit Intelligence

EPSS Score
3.23%
Probability of exploitation in next 30 days
EPSS Percentile
87.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0323 is in the 79th percentile among its peer group of 36,897 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (19)

microsoftpatch availablevia nvd_reference
View patch
microsoftpatch availablevia msrc
Product: azure-c-shared-utility
View patch
microsoftpatch availablevia msrc
Product: Azure-c-shared-utility Release LTS_07_2020_Ref02
View patch
microsoftpatch availablevia msrc
Product: Azure-c-shared-utility Release LTS_02_2020_Ref02
View patch
microsoftpatch availablevia msrc
Product: azure-uamqp-c
View patch
microsoftpatch availablevia msrc
Product: azure-umqtt-c
View patch
microsoftpatch availablevia msrc
Product: azure-uhttp-c
View patch
microsoftpatch availablevia msrc
Product: azure-uhttp-c Release LTS_07_2020_Ref02
View patch
microsoftpatch availablevia msrc
Product: azure-utpm-c
View patch
microsoftpatch availablevia msrc
Product: azure-uamqp-c Release LTS_07_2020_Ref02
View patch
microsoftpatch availablevia msrc
Product: azure-umqtt-c Release LTS_07_2020_Ref02
View patch
microsoftpatch availablevia msrc
Product: azure-utpm-c Release LTS_07_2020_Ref02
View patch
microsoftpatch availablevia msrc
Product: azure-uamqp-c Release LTS_02_2020_Ref02
View patch
microsoftpatch availablevia msrc
Product: azure-umqtt-c Release LTS_02_2020_Ref02
View patch
microsoftpatch availablevia msrc
Product: azure-uhttp-c Release LTS_02_2020_Ref02
View patch
microsoftpatch availablevia msrc
Product: azure-utpm-c Release LTS_02_2020_Ref02
View patch
microsoftpatch availablevia msrc
Product: C SDK for Azure IoT Release LTS_07_2020_Ref02
View patch
microsoftpatch availablevia msrc
Product: C SDK for Azure IoT Release LTS_02_2020_Ref02
View patch
microsoftpatch availablevia msrc
Product: C SDK for Azure IoT
View patch

Vendor Advisories (1)

microsoft2020-Dec/CVE-2020-17002Important

Azure SDK for C Security Feature Bypass Vulnerability

Dec 8, 2020

References

portal.msrc.microsoft.com / en-US/security-guidance/advisory/CVE-2020-17002
PatchVendor Advisory
msrc.microsoft.com / update-guide/vulnerability/CVE-2020-17002