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Full vulnerability report · 2020
CVE-2020-17013High confidence

Win32k Information Disclosure Vulnerability

Microsoft · Windows 10 Version 1803

5.5MediumCVSS 3.1
Recommended action
Scheduled

Medium technical severity with no CISA KEV confirmation; remediate through the normal risk-based patch cycle unless local exposure raises the priority.

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-2020-8970

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 actionScheduled

Medium technical severity with no CISA KEV confirmation; remediate through the normal risk-based patch cycle unless local exposure raises the priority.

Patch available
01

What, why and how

Win32k Information Disclosure Vulnerability

What

Win32k Information Disclosure 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 with low privileges. If successful, the issue may obtain information outside the intended access boundary.

What

Win32k Information Disclosure 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 with low privileges. If successful, the issue may obtain information outside the intended access boundary.

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 → obtain information outside the intended access boundary
Attack surface
Local
Privileges required
Low: a basic authenticated account is required
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:L/UI:N/S:U/C:H/I:N/A:N/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.PRLowPrivileges required: The attacker needs basic user-level 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.INoneIntegrity impact: No direct loss is represented by this metric.ANoneAvailability impact: No direct loss is represented by this metric.
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.
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-738Multiples vulnérabilités dans Microsoft Windows

d?id=CVE-2020-16998 Référence CVE CVE-2020-16999 https://www.cve.org/CVERecord?id=CVE-2020-16999 Référence CVE CVE-2020-17000 https://www.cve.org/CVERecord?id=CVE-2020-17000 Référence CVE CVE-2020-17001 https://www.cve.org/CVERecord?id=CVE-2020-17001 Référence CVE CVE-2020-17004 https://www.cve.org/CVERecord?id=CVE-2020-17004 Référence CVE CVE-2020-17007 https://www.cve.org/CVERecord?id=CVE-2020-17007 Référence CVE CVE-2020-17010 https://www.cve.org/CVERecord?id=CVE-2020-17010 Référence CVE CVE-2020-17011 https://www.cve.org/CVERecord?id=CVE-2020-17011 Référence CVE CVE-2020-17012 https://www.cve.org/CVERecord?id=CVE-2020-17012 Référence CVE CVE-2020-17013 https://www.cve.org/CVERecord?id=CVE-2020-17013 Référence CVE CVE-2020-17014 https://www.cve.org/CVERecord?id=CVE-2020-17014 Référence CVE CVE-2020-17024 https://www.cve.org/CVERecord?id=CVE-2020-17024 Référence CVE CVE-2020-17025 https://www.cve.org/CVERecord?id=CVE-2020-17025 Référence CVE CVE-2020-17026 https://www.cve.org/CVERecord?id=CVE-2020-17026 Référence CVE CVE-2020-17027 https://www.cve.org/CVERecord?id=CVE-2020-17027 Référence CVE CVE-2020-17028 https://www.cve.org/CVERecord?id=CVE-2020-17028 Référence CVE CVE-2020-17029 https://www.cve.org/CVERecord?id=CVE-2020-17029 Référence CVE CVE-2020-17030 https://www.cve.org/CVERecord?id=

Official advisory ↗
JVN iPedia · Japanese · JVNDB-2020-010100Microsoft Windows 10 および Windows Server における情報を公開される脆弱性

Microsoft Windows 10 および Windows Server には、Win32k に不備があるため、情報を公開される脆弱性が存在します。

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

ft Scripting Engine CVE-2020-17048 Chakra Scripting Engine 메모리 충돌 취약점 CVE-2020-17052 Scripting Engine 메모리 충돌 취약점 CVE-2020-17053 Internet Explorer 메모리 충돌 취약점 CVE-2020-17054 Chakra Scripting Engine 메모리 충돌 취약점 Microsoft Teams CVE-2020-17091 Microsoft Teams 원격코드실행 취약점 Microsoft Windows CVE-2020-1599 Windows 스푸핑 취약점 CVE-2020-16997 Remote Desktop Protocol Server 정보노출 취약점 CVE-2020-17000 Remote Desktop Protocol Client 정보노출 취약점 CVE-2020-17001 Windows Print Spooler 권한상승 취약점 CVE-2020-17007 Windows Error Reporting 권한상승 취약점 CVE-2020-17010 Win32k 권한상승 취약점 CVE-2020-17011 Windows Port Class Library 권한상승 취약점 CVE-2020-17012 Windows Bind Filter Driver 권한상승 취약점 CVE-2020-17013 Win32k 정보노출 취약점 CVE-2020-17014 Windows Print Spooler 권한상승 취약점 CVE-2020-17024 Windows Client Side Rendering Print Provider 권한상승 취약점 CVE-2020-17025 Windows Remote Access 권한상승 취약점 CVE-2020-17026 Windows Remote Access 권한상승 취약점 CVE-2020-17027 Windows Remote Access 권한상승 취약점 CVE-2020-17028 Windows Remote Access 권한상승 취약점 CVE-2020-17030 Windows MSCTF Server 정보노출 취약점 CVE-2020-17031 Windows Remote Access 권한상승 취약점 CVE-2020-17032 Windows Remote Access 권한상승 취약점 CVE-2020-17033 Windows Remote Access 권한상승 취약점 CVE-2020-17034 Windows Remote Access 권한상승 취약점 CVE-2020-17036 Windows Function Discovery SSDP Provider 정보노출 취약점 CVE-2020-17040 Windows Hyper-V 인증 우회 취약점

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
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-2020-8970
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-2020-8970↗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-2020-17013 · cve.blacktree.nl