Security readout for executives and security teams
Plain-English summary
This is a high-severity Microsoft Azure SDK for C security feature bypass. If an application or device uses the affected Azure IoT C SDK components, a network attacker could potentially undermine protections affecting data confidentiality and integrity. The public bundle does not describe the bypass mechanism.
Executive priority
Prioritize remediation where affected SDKs handle cloud connectivity, device identity, or sensitive telemetry. The main business risk is trust-boundary bypass in connected products, with high confidentiality and integrity impact but no sourced evidence of active exploitation.
Technical view
CVE-2020-17002 affects Azure SDK for C components including azure-c-shared-utility, azure-uamqp-c, azure-uhttp-c, azure-umqtt-c, azure-utpm-c, and C SDK for Azure IoT. CVSS 3.1 is 7.4: network attack vector, high complexity, no privileges, no user interaction, high confidentiality and integrity impact, no availability impact.
Likely exposure
Exposure is most likely in products, firmware, gateways, or services that embed the listed Azure IoT C SDK libraries, especially the named LTS_02_2020_Ref02 and LTS_07_2020_Ref02 releases or azure-uamqp-c 1.0.0.
Exploitation context
The source bundle does not show CISA KEV listing or confirmed active exploitation. CVSS exploit maturity is unproven, and attack complexity is high. Treat this as a serious supply-chain dependency issue, not as confirmed internet-wide exploitation.
Researcher notes
Public evidence is sparse: no CWE or mechanism is provided in the bundle. Use MSRC as the authoritative source for affected and fixed release details, and avoid assuming exploitability beyond the CVSS vector and listed affected components.
Mitigation direction
- Check Microsoft MSRC guidance for exact fixed versions and update paths.
- Upgrade affected Azure SDK for C and Azure IoT C SDK components.
- Prioritize embedded products and long-lived IoT deployments using old SDK snapshots.
- Track remediation for downstream products that statically bundle these libraries.
Validation and detection
- Inventory source, build manifests, submodules, and vendored SDK copies.
- Look for listed components and named LTS release identifiers.
- Confirm deployed binaries were rebuilt with Microsoft-fixed SDK versions.
- Document any unsupported devices that cannot receive updated SDK components.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CVE-2020-17002 mapping review
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Open ATT&CK lookup- Severity
- High
- CVSS
- 7.4 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
SSVC decision data
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C2.25.2microsoftVulnerability scoring details
Base CVSS 3.1 score
7.4HighVector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- Azure SDK for C Security Feature Bypass VulnerabilityCVE reference, microsoft · vendor-advisory, patch
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-17002CVE reference, CVE · x_refsource_MISC, x_transferred
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.