BlackTreeCVE Intelligence
← Back to the CVE catalogue
Full vulnerability report · 2020
CVE-2020-16987High confidence

Azure Sphere Unsigned Code Execution Vulnerability

Microsoft · Azure Sphere

7.3HighCVSS 3.1
Recommended action
Within 7 days

High technical severity; prioritise exposed affected systems while verifying vendor guidance.

Patch available
Optional official sources

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

Select the national-authority views to include. The exact source language is shown on each matched advisory. Your choice is remembered on this device and encoded in the shareable URL.

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-2020-8944

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

High technical severity; 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 local access may attempt exploitation without authentication or user interaction. 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 local access may attempt exploitation without authentication or user interaction. 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.
None recorded

No exploit-tagged reference or CISA SSVC proof-of-concept state is currently recorded. Research may still exist outside the structured feeds.

Likely attack path
local access → vulnerable operation → cause the confidentiality, integrity or availability impact described by the vendor
Attack surface
Local
Privileges required
None: unauthenticated exploitation is possible
User interaction
None
Attack complexity
Low: no specialised conditions are recorded
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:L/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:L/E:U/RL:O/RC:C

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

AVLocalAttack vector: The attacker needs local access to the vulnerable system.ACLowAttack complexity: No specialised conditions are required beyond attacker-controlled input.PRNonePrivileges required: The attacker does not need an account or existing privileges.UINoneUser interaction: No action by another user is required.SUnchangedScope: The security impact remains within the vulnerable component's authority.CLowConfidentiality impact: A successful attack can cause a limited loss.IHighIntegrity impact: A successful attack can cause a major loss.ALowAvailability impact: A successful attack can cause a limited loss.
Post-exploitation / living off the land
The issue can support a local privilege or sandbox boundary transition; normal system utilities may then be available in the gained context.
Unauthenticated
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

-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=CVE-2020-16990 Référence CVE CVE-2020-16991 https://www.cve.org/CVERecord?id=CVE-2020-16991 Référence CVE CVE-2020-16992 https://www.cve.org/CVERecord?id=CVE-2020-16992 Référence CVE CVE-2020-16993 https://www.cve.org/CVERecord?id=CVE-2020-16993 Référence CVE CVE-2020-16994 https://www.cve.org/CVERecord?id=CVE-2020-16994 Référence CVE CVE-2020-17005 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

ra 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 Microsoft Browser 메모리 충돌 취약점 Microsoft Dynamics CVE-2020-17005 Microsoft Dynamics 365 (on-premises) XSS 취약점 CVE-2020-17006 Microsoft Dynamics 365 (on-premises) XSS 취약점 CVE-2020-17018 Microsoft Dynamics 365 (on

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-2020-8944
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-2020-8944↗Patch or update reference↗CVE authority or vendor 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-2020-16987 · cve.blacktree.nl