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Full vulnerability report · 2026
CVE-2026-58635High confidence

Windows Narrator Braille Elevation of Privilege Vulnerability

Microsoft · Windows 10 Version 1809

7.8HighCVSS 3.1
Recommended action
Within 7 days

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

Fix not verified
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-2026-43776

No EUVD known-exploited evidence

Improper neutralization of special elements used in a command ('command injection') in Windows Narrator Braille allows an authorized attacker to elevate privileges locally.

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
7.8 · CVSS 3.1
Advisory evidence
No linked advisory details stored yet
Recommended actionWithin 7 days

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

Fix not verified
01

What, why and how

Improper neutralization of special elements used in a command ('command injection') in Windows Narrator Braille allows an authorized attacker to elevate privileges locally.

What

Improper neutralization of special elements used in a command ('command injection') in Windows Narrator Braille allows an authorized attacker to elevate privileges locally.

Why

Untrusted input reaches a command interpreter without sufficient validation or separation from command syntax.

How

An attacker operating through local access may attempt exploitation with low privileges. If successful, the issue may gain additional privileges.

What

Improper neutralization of special elements used in a command ('command injection') in Windows Narrator Braille allows an authorized attacker to elevate privileges locally.

Why

Untrusted input reaches a command interpreter without sufficient validation or separation from command syntax.

How

An attacker operating through local access may attempt exploitation with low privileges. If successful, the issue may gain additional privileges.

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 → Improper Neutralization of Special Elements used in a Command ('Command Injection') → gain additional privileges
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: a standard category for the underlying weakness.
CWE-77 ↗

CWE-77: Improper Neutralization of Special Elements used in a Command ('Command Injection'). The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component.

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:H/A:H/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.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
The issue can support a local privilege or sandbox boundary transition; normal system utilities may then be available in the gained context.
Privilege escalationCWE-77
A

Official authority intelligence

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

ENISA EUVD · EUVD-2026-43776Official EUVD mapping

Improper neutralization of special elements used in a command ('command injection') in Windows Narrator Braille allows an authorized attacker to elevate privileges locally.

Official EUVD record
BSI · German · WID-SEC-W-2026-2316Microsoft Windows Produkte: Mehrere Schwachstellen

Ein Angreifer kann mehrere Schwachstellen in Microsoft Windows Produkten ausnutzen, um seine Privilegien zu erhöhen, um beliebigen Programmcode auszuführen, um einen Denial of Service Angriff durchzuführen, um Informationen offenzulegen, um falsche Informationen darzustellen, um Daten zu manipulieren, und um Sicherheitsvorkehrungen zu umgehen.

Official advisory
CERT-FR · French · CERTFR-2026-AVI-0869Multiples vulnérabilités dans Microsoft Windows

6-58619 du 14 juillet 2026 Bulletin de sécurité Microsoft Windows CVE-2026-58626 du 14 juillet 2026 Bulletin de sécurité Microsoft Windows CVE-2026-58627 du 14 juillet 2026 Bulletin de sécurité Microsoft Windows CVE-2026-58628 du 14 juillet 2026 Bulletin de sécurité Microsoft Windows CVE-2026-58629 du 14 juillet 2026 Bulletin de sécurité Microsoft Windows CVE-2026-58631 du 14 juillet 2026 Bulletin de sécurité Microsoft Windows CVE-2026-58632 du 14 juillet 2026 Bulletin de sécurité Microsoft Windows CVE-2026-58633 du 14 juillet 2026 Bulletin de sécurité Microsoft Windows CVE-2026-58634 du 14 juillet 2026 Bulletin de sécurité Microsoft Windows CVE-2026-58635 du 14 juillet 2026 Bulletin de sécurité Microsoft Windows CVE-2026-58637 du 14 juillet 2026 Bulletin de sécurité Microsoft Windows CVE-2026-58638 du 14 juillet 2026 Bulletin de sécurité Microsoft Windows CVE-2026-58640 du 14 juillet 2026 Une gestion de version détaillée se trouve à la fin de ce document. Risques Atteinte à l'intégrité des données Atteinte à la confidentialité des données Contournement de la politique de sécurité Déni de service à distance Exécution de code arbitraire à distance Élévation de privilèges Systèmes affectés .NET 10.0 installed sur Windows versions antérieures à 10.0.6 .NET 8.0 installed sur Windows versions antér

Official advisory
CSIRT Italia · Italian · aggiornamenti-mensili-microsoft-22Aggiornamenti Mensili Microsoft

scovery Protocol (WPAD) Windows WebView Windows Win32K Windows Win32K - GRFX Windows Wireless Networking Windows Wireless Wide Area Network Service Azioni di mitigazione In linea con le dichiarazioni del vendor, si raccomanda di procedere all’aggiornamento dei prodotti impattati attraverso l’apposita funzione di Windows Update. CVE (622) Cerca: Tabella CVE CVE POC EXPLOITATION CVE-2026-58647 : apre una nuova finestra - - CVE-2026-58644 : apre una nuova finestra - - CVE-2026-58640 : apre una nuova finestra - - CVE-2026-58638 : apre una nuova finestra - - CVE-2026-58637 : apre una nuova finestra - - CVE-2026-58636 : apre una nuova finestra - - CVE-2026-58635 : apre una nuova finestra - - CVE-2026-58634 : apre una nuova finestra - - CVE-2026-58633 : apre una nuova finestra - - CVE-2026-58632 : apre una nuova finestra - - CVE-2026-58631 : apre una nuova finestra - - CVE-2026-58629 : apre una nuova finestra - - CVE-2026-58628 : apre una nuova finestra - - CVE-2026-58627 : apre una nuova finestra - - CVE-2026-58626 : apre una nuova finestra - - CVE-2026-58619 : apre una nuova finestra - - CVE-2026-58618 : apre una nuova finestra - - CVE-2026-58617 : apre una nuova finestra - - CVE-2026-58614 : apre una nuova finestra - - CVE-2026-58613 : apre una nuova finestra - - CVE-2026-58610 : apre una nuova fi

Official advisory
NCSC-NL · Dutch · NCSC-2026-0231Kwetsbaarheden verholpen in Microsoft Windows

Improper neutralization of special elements in Windows Narrator Braille commands enables an authorized attacker to locally elevate privileges.

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.
Fix not verified
Affected
10.0.17763.0 < 10.0.17763.9020; 10.0.19044.0 < 10.0.19044.7548; 10.0.19045.0 < 10.0.19045.7548; 10.0.26100.0 < 10.0.26100.8875; 10.0.26200.0 < 10.0.26200.8875; 10.0.28000.0 < 10.0.28000.2525
Fixed
No fixed version is explicitly recorded in the structured CVE data.
Action
No verified patch reference is present in the current structured sources. Check the vendor advisory before making a change.
Workaround
No verified workaround is recorded. Limit untrusted access and use least privilege until authoritative guidance is available.
04

Evidence and provenance

Published 14 Jul 2026 · Last source change 9 Sept 2026, 19:36 UTC · CWE-77 · Improper Neutralization of Special Elements used in a Command ('Command Injection')

CVE recordCVE.org · 5.2
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-2026-43776
Product sourceCNA
Remediation sourceCVE/CNA references
CWE sourceOther authority
NVD statusNVD enriched

Core structured fields are present and their contributing authorities are shown above.

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
ENISA EUVD · EUVD-2026-43776↗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-2026-58635 · cve.blacktree.nl