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Full vulnerability report · 2020
CVE-2020-16982High confidence

Azure Sphere Unsigned Code Execution Vulnerability

Microsoft · Azure Sphere

6.1MediumCVSS 3.1
Recommended action
Within 7 days

Medium technical severity with public exploit material referenced by a structured source; prioritise exposed affected systems while verifying vendor guidance.

Patch available
R
Operational reassessment

Published severity in operational context

Open reassessment dashboard →
Published severityMediumOperational priority:Medium, unchanged from published severity.unchanged

Evidence used

  • No CISA KEV confirmation is currently recorded.
  • A structured source references public exploit or proof-of-concept material.
  • Exploitation requires an existing local or physical foothold with privileges.
  • EPSS is 1.24% for the current model date.

Compensating controls

  • Validate the affected product branch and deploy the verified fixed release.
  • Restrict local access and enforce least privilege on affected hosts.
  • Increase monitoring for the attack path and post-exploitation behaviour described in the report.

Verification

  1. Confirm that the asset runs Microsoft Azure Sphere and falls inside the recorded affected range.
  2. Verify the installed build against the product-specific fixed version after deployment.
  3. Validate exposure, authentication requirements and compensating controls in the actual environment.
  4. Reopen this reassessment when CVSS, KEV, EPSS, exploit evidence or remediation changes.
Mitigation target: As exposure requiresRemediation target: Within 365 days

This automated reassessment organises public evidence. It does not know asset exposure, business impact or control effectiveness and does not replace CVSS or a human risk decision.

Optional official sources

National CERT insights
?CERT means Computer Emergency Response Team; CSIRT is the closely related term Computer Security Incident Response Team.

Choose official national sources for this report. Each advisory shows its original language. Your selection is remembered on this device and included in shared links.

Official European source

ENISA European Vulnerability Database

Official EUVD identifiers, advisory evidence and known-exploited context. Missing fields are not treated as evidence of low risk.

1 current
ENISA EUVD identifier

EUVD-2020-8939

No EUVD known-exploited evidence

ENISA has published the identifier mapping but no EUVD description has been stored yet.

EUVD state
Present in the current official mapping
Known exploitation
Not present in the current ENISA EUVD known-exploited dataset. This is not proof of no exploitation.
ENISA score
Not supplied in the stored EUVD record
Advisory evidence
No linked advisory details stored yet
Recommended actionWithin 7 days

Medium technical severity with public exploit material referenced by a structured source; prioritise exposed affected systems while verifying vendor guidance.

Patch available
01

What, why and how

Azure Sphere Unsigned Code Execution Vulnerability

What

Azure Sphere Unsigned Code Execution Vulnerability

Why

The current structured CVE record identifies a security weakness, but the root cause requires confirmation in the linked vendor material.

How

An attacker operating through physical access may attempt exploitation with elevated privileges. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

What

Azure Sphere Unsigned Code Execution Vulnerability

Why

The current structured CVE record identifies a security weakness, but the root cause requires confirmation in the linked vendor material.

How

An attacker operating through physical access may attempt exploitation with elevated privileges. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

02

Exploit reality and attack path

CVSS severity, EPSS forecast probability, public exploit material and CISA-confirmed exploitation are separate signals.

Observed exploitation
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
No confirmed evidence

No CISA KEV match was present at the last successful refresh. This means no confirmation from that source, not proof of no exploitation.

Public PoC / exploit material
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
Reference recorded

A structured CVE source labels at least one public reference as exploit material. BlackTree has not independently validated that it is safe, reliable or weaponised.

Likely attack path
physical access → vulnerable operation → cause the confidentiality, integrity or availability impact described by the vendor
Attack surface
Physical
Privileges required
High: elevated access is required
User interaction
None
Attack complexity
High: exploitation depends on specific conditions
Security boundary
Unchanged: impact remains within the vulnerable component's security authority
Weakness
?CWE means Common Weakness Enumeration.
CWE not yet assigned
CVSS vector
?CVSS means Common Vulnerability Scoring System. The vector records the metric values used to calculate technical severity.
CVSS:3.1/AV:P/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

Common Vulnerability Scoring System 3.1: the compact vector below is decoded into plain language.

AVPhysicalAttack vector: The attacker needs physical access to the vulnerable system.ACHighAttack complexity: Successful exploitation depends on specific conditions outside the attacker's direct control.PRHighPrivileges required: The attacker needs elevated or administrative privileges.UINoneUser interaction: No action by another user is required.SUnchangedScope: The security impact remains within the vulnerable component's authority.CHighConfidentiality impact: A successful attack can cause a major loss.IHighIntegrity impact: A successful attack can cause a major loss.AHighAvailability impact: A successful attack can cause a major loss.
Post-exploitation / living off the land
No specific living-off-the-land technique is confirmed in the structured sources. Monitor normal administration tools for activity inconsistent with the affected service's baseline.
Public exploit reference
A

Official authority intelligence

Only matched European and national findings are included. Language selectors and unavailable sources are omitted.

Cyber Security Agency of Singapore · English · CSA-SB-20201118Security Bulletin 18 Nov 2020

The Cyber Security Agency of Singapore included this CVE in its official Security Bulletin 18 Nov 2020, published on 18 November 2020. Open the linked bulletin for the product, severity and reference information published in that issue.

Official advisory ↗
CERT-FR · French · CERTFR-2020-AVI-739Multiples vulnérabilités dans les produits Microsoft

e code à distance, une atteinte à la confidentialité des données, un contournement de la fonctionnalité de sécurité, un déni de service et une usurpation d'identité. Solution Se référer au bulletin de sécurité de l'éditeur pour l'obtention des correctifs (cf. section Documentation). Documentation Bulletin de sécurité Microsoft du 11 novembre 2020 https://portal.msrc.microsoft.com/fr-FR/security-guidance Référence CVE CVE-2020-1325 https://www.cve.org/CVERecord?id=CVE-2020-1325 Référence CVE CVE-2020-16970 https://www.cve.org/CVERecord?id=CVE-2020-16970 Référence CVE CVE-2020-16981 https://www.cve.org/CVERecord?id=CVE-2020-16981 Référence CVE CVE-2020-16982 https://www.cve.org/CVERecord?id=CVE-2020-16982 Référence CVE CVE-2020-16983 https://www.cve.org/CVERecord?id=CVE-2020-16983 Référence CVE CVE-2020-16984 https://www.cve.org/CVERecord?id=CVE-2020-16984 Référence CVE CVE-2020-16985 https://www.cve.org/CVERecord?id=CVE-2020-16985 Référence CVE CVE-2020-16986 https://www.cve.org/CVERecord?id=CVE-2020-16986 Référence CVE CVE-2020-16987 https://www.cve.org/CVERecord?id=CVE-2020-16987 Référence CVE CVE-2020-16988 https://www.cve.org/CVERecord?id=CVE-2020-16988 Référence CVE CVE-2020-16989 https://www.cve.org/CVERecord?id=CVE-2020-16989 Référence CVE CVE-2020-16990 https://www.cve.org/CVERecord?id=

Official advisory ↗
JVN iPedia · Japanese · JVNDB-2020-010221Azure Sphere における未署名のコードを実行される脆弱性

Azure Sphere には、未署名のコードを実行される脆弱性が存在します。 本脆弱性は、CVE-2020-16970、CVE-2020-16982、CVE-2020-16984、CVE-2020-16991、CVE-2020-16994 とは異なる脆弱性です。

Official advisory ↗
JVN iPedia · Japanese · JVNDB-2020-010220Azure Sphere における未署名のコードを実行される脆弱性

Azure Sphere には、未署名のコードを実行される脆弱性が存在します。 本脆弱性は、CVE-2020-16970、CVE-2020-16982、CVE-2020-16987、CVE-2020-16991、CVE-2020-16994 とは異なる脆弱性です。

Official advisory ↗
JVN iPedia · Japanese · JVNDB-2020-010135Azure Sphere における未署名のコードを実行される脆弱性

Azure Sphere には、未署名のコードを実行される脆弱性が存在します。 本脆弱性は、CVE-2020-16970、CVE-2020-16984、CVE-2020-16987、CVE-2020-16991、CVE-2020-16994 とは異なる脆弱性です。

Official advisory ↗
JVN iPedia · Japanese · JVNDB-2020-010134Azure Sphere における未署名のコードを実行される脆弱性

Azure Sphere には、未署名のコードを実行される脆弱性が存在します。 本脆弱性は、CVE-2020-16982、CVE-2020-16984、CVE-2020-16987、CVE-2020-16991、CVE-2020-16994 とは異なる脆弱性です。

Official advisory ↗
JVN iPedia · Japanese · JVNDB-2020-010127Azure Sphere における未署名のコードを実行される脆弱性

Azure Sphere には、未署名のコードを実行される脆弱性が存在します。 本脆弱性は、CVE-2020-16970、CVE-2020-16982、CVE-2020-16984、CVE-2020-16987、CVE-2020-16991 とは異なる脆弱性です。

Official advisory ↗
JVN iPedia · Japanese · JVNDB-2020-010126Azure Sphere における未署名のコードを実行される脆弱性

Azure Sphere には、未署名のコードを実行される脆弱性が存在します。 本脆弱性は、CVE-2020-16970、CVE-2020-16982、CVE-2020-16984、CVE-2020-16987、CVE-2020-16994 とは異なる脆弱性です。

Official advisory ↗
KISA KrCERT/CC · Korean · KNVD-5228MS 11월 보안 위협에 따른 정기 보안 업데이트 권고

드 실행 [1] 참고 Microsoft Exchange Server 중요 원격 코드 실행 4588741 Microsoft Dynamics 365 관련 소프트웨어 중요 스푸핑 4577009, 4584611, 4584612 Microsoft Visual Studio 관련 소프트웨어 중요 원격 코드 실행 [1] 참고 Azure 관련 소프트웨어 긴급 원격 코드 실행 Chakra Core 긴급 원격 코드 실행 [참고 사이트] [1] (한글) https://portal.msrc.microsoft.com/ko-kr/security-guidance [2] (영문) https://portal.msrc.microsoft.com/en-us/security-guidance [3] https://msrc.microsoft.com/update-guide/releaseNote/2020-Nov o 취약점 요약 정보 제품 카테고리 CVE ID 취약점 내용 Azure DevOps CVE-2020-1325 Azure DevOps Server and Team Foundation Services 스푸핑 취약점 Azure Sphere CVE-2020-16970 Azure Sphere Unsigned 임의코드실행 취약점 CVE-2020-16981 Azure Sphere 권한상승 취약점 CVE-2020-16982 Azure Sphere Unsigned 임의코드실행 취약점 CVE-2020-16983 Azure Sphere 변조 취약점 CVE-2020-16984 Azure Sphere Unsigned 임의코드실행 취약점 CVE-2020-16985 Azure Sphere 정보노출 취약점 CVE-2020-16986 Azure Sphere 서비스거부 취약점 CVE-2020-16987 Azure Sphere Unsigned 임의코드실행 취약점 CVE-2020-16988 Azure Sphere 권한상승 취약점 CVE-2020-16989 Azure Sphere 권한상승 취약점 CVE-2020-16990 Azure Sphere 정보노출 취약점 CVE-2020-16991 Azure Sphere Unsigned 임의코드실행 취약점 CVE-2020-16992 Azure Sphere 권한상승 취약점 CVE-2020-16993 Azure Sphere 권한상승 취약점 CVE-2020-16994 Azure Sphere Unsigned 임의코드실행 취약점 Common Log File System Driver CVE-2020-17088 Windows Common Log File System Driver 권한상승 취약점 Microsoft Browsers CVE-2020-17058 Mic

Official advisory ↗
03

Patch and workaround

Operational remediation based on structured source evidence.

Status
?Patch availability is based on structured fixed-version fields and authoritative update references. If no fix is verified, check the vendor advisory before making a change.
Patch available
Affected
Azure Sphere: 20.00 < publication
Fixed
An authoritative update reference is available, but the fixed version is not recorded in the structured CVE fields. Check the linked vendor advisory for the applicable release.
Action
Review the linked authoritative reference and apply the recorded fixed release appropriate to the affected product branch.
Workaround
No verified workaround is recorded. Limit untrusted access and use least privilege until authoritative guidance is available.
04

Evidence and provenance

Published 11 Nov 2020 · Last source change 10 Sept 2024, 15:51 UTC · CWE not yet assigned

CVE recordCVE.org · 5.1
CVSS sourceCNA
EPSS source
?The date BlackTree first stored a score for this CVE from the daily FIRST EPSS feed.
FIRST · tracked since 2026-08-14
European sourceENISA EUVD · EUVD-2020-8939
Product sourceCNA
Remediation sourceCVE/CNA references
CWE sourceUnavailable
NVD statusNVD modified after enrichment

Missing structured fields: CWE classification. Missing data is not evidence of low risk; review the primary advisory.

Material change intelligence

What changed after publication

View recent updates ↗

No material field changes have been recorded since change tracking began. Routine source refreshes and cosmetic edits are intentionally excluded.

Material fields only · duplicate refreshes suppressed · history retained for the configured operational retention period
CVE published
Fixed release or patch reference recorded
ENISA EUVD · EUVD-2020-8939↗Patch or update reference↗Public exploit reference↗Public exploit reference↗Official CVE record (CNA and ADP data)↗NVD record↗
Technical terms and abbreviations used in this report
CVE
Common Vulnerabilities and Exposures: the public identifier for one disclosed vulnerability.
CVSS
Common Vulnerability Scoring System: a technical severity framework; it is not patching priority by itself.
EPSS
Exploit Prediction Scoring System: FIRST's estimate of the probability that exploitation activity will be observed in the next 30 days; it is a forecast, not confirmation.
CWE
Common Weakness Enumeration: the standard category describing the underlying software or hardware weakness.
CNA
CVE Numbering Authority: an organisation authorised to assign and publish CVE records.
CISA ADP
Cybersecurity and Infrastructure Security Agency Authorized Data Publisher: structured enrichment added to a CVE record.
NVD
National Vulnerability Database: NIST's enrichment service for CVE records.
CERT / CSIRT
A computer security incident response team that publishes warnings or coordinates incident response.
PoC
Proof of concept: public material that demonstrates or helps reproduce exploitation.
CSAF
Common Security Advisory Framework: a machine-readable format for security advisories.
LoTL
Living off the land: abuse of legitimate tools or system functions during an attack.
Free version - for non-commercial use only.CVE-2020-16982 · cve.blacktree.nl