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Full vulnerability report · 2026
CVE-2026-66819High confidence

Microsoft SQL Server Elevation of Privilege Vulnerability

Microsoft · Microsoft SQL Server 2017 (CU 31)

8.8HighCVSS 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-2026-73814

No EUVD known-exploited evidence

Improper neutralization of special elements used in an sql command ('sql injection') in SQL Server allows an authorized attacker to elevate privileges over a network.

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
8.8 · 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.

Patch available
01

What, why and how

Improper neutralization of special elements used in an sql command ('sql injection') in SQL Server allows an authorized attacker to elevate privileges over a network.

What

Improper neutralization of special elements used in an sql command ('sql injection') in SQL Server allows an authorized attacker to elevate privileges over a network.

Why

Attacker-controlled data is not kept separate from SQL query syntax, allowing the intended database operation to be changed.

How

An attacker operating through a network path may attempt exploitation with low privileges. If successful, the issue may gain additional privileges.

What

Improper neutralization of special elements used in an sql command ('sql injection') in SQL Server allows an authorized attacker to elevate privileges over a network.

Why

Attacker-controlled data is not kept separate from SQL query syntax, allowing the intended database operation to be changed.

How

An attacker operating through a network path 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
a network path → Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') → gain additional privileges
Attack surface
Network
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-89 ↗

CWE-89: Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection'). The product constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component. Without sufficient removal or quoting of SQL syntax in user-controllable inputs, the generated SQL query can cause those inputs to be interpreted as SQL instead of ordinary user data.

CVSS vector
?CVSS means Common Vulnerability Scoring System. The vector records the metric values used to calculate technical severity.
CVSS:3.1/AV:N/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.

AVNetworkAttack vector: The vulnerable component can be reached over a network.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
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.
NetworkPrivilege escalationCWE-89
A

Official authority intelligence

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

ENISA EUVD · EUVD-2026-73814Official EUVD mapping

Improper neutralization of special elements used in an sql command ('sql injection') in SQL Server allows an authorized attacker to elevate privileges over a network.

Official EUVD record ↗
BSI · German · WID-SEC-2026-3271Microsoft SQL Server: Mehrere Schwachstellen

Ein Angreifer kann mehrere Schwachstellen in Microsoft SQL Server 2017, SQL Server 2019 und SQL Server 2022 ausnutzen, um seine Berechtigungen zu erweitern – unter anderem auf SQL-Sysadmin- oder SYSTEM-Rechte –, beliebigen Code auszuführen, vertrauliche Informationen offenzulegen, einen Denial-of-Service-Zustand auszulösen und Sicherheitsmaßnahmen zu umgehen.

Official advisory ↗
CERT-FR · French · CERTFR-2026-AVI-1149Multiples vulnérabilités dans les produits Microsoft

septembre 2026 Bulletin de sécurité Microsoft CVE-2026-66303 du 08 septembre 2026 Bulletin de sécurité Microsoft CVE-2026-66304 du 08 septembre 2026 Bulletin de sécurité Microsoft CVE-2026-66305 du 08 septembre 2026 Bulletin de sécurité Microsoft CVE-2026-66306 du 08 septembre 2026 Bulletin de sécurité Microsoft CVE-2026-66307 du 08 septembre 2026 Bulletin de sécurité Microsoft CVE-2026-66308 du 08 septembre 2026 Bulletin de sécurité Microsoft CVE-2026-66814 du 08 septembre 2026 Bulletin de sécurité Microsoft CVE-2026-66816 du 08 septembre 2026 Bulletin de sécurité Microsoft CVE-2026-66818 du 08 septembre 2026 Bulletin de sécurité Microsoft CVE-2026-66819 du 08 septembre 2026 Bulletin de sécurité Microsoft CVE-2026-66820 du 08 septembre 2026 Bulletin de sécurité Microsoft CVE-2026-67368 du 08 septembre 2026 Bulletin de sécurité Microsoft CVE-2026-67369 du 08 septembre 2026 Bulletin de sécurité Microsoft CVE-2026-67370 du 08 septembre 2026 Bulletin de sécurité Microsoft CVE-2026-67373 du 08 septembre 2026 Bulletin de sécurité Microsoft CVE-2026-67376 du 08 septembre 2026 Bulletin de sécurité Microsoft CVE-2026-67378 du 08 septembre 2026 Bulletin de sécurité Microsoft CVE-2026-67379 du 08 septembre 2026 Bulletin de sécurité Microsoft CVE-2026-67380 du 08 septembre 2026 Bulletin de sécurité Micr

Official advisory ↗
CSIRT Italia · Italian · aggiornamenti-mensili-microsoft-24Aggiornamenti Mensili Microsoft

lient Service Windows Win32 Kernel Subsystem Windows Win32K Windows Wireless Networking Windows Wireless Wide Area Network Service Windows Work Folder Service Windows Work Folders Windows exFAT File System Windows iSCSI Windows iSCSI Target Service Winsock XBox Gaming Services Xbox 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 (973) Cerca: Tabella CVE CVE POC EXPLOITATION CVE-2026-58649 : apre una nuova finestra - - CVE-2026-62906 : apre una nuova finestra - - CVE-2026-66820 : apre una nuova finestra - - CVE-2026-66819 : apre una nuova finestra - - CVE-2026-55007 : apre una nuova finestra - - CVE-2026-62694 : apre una nuova finestra - - CVE-2026-66814 : apre una nuova finestra - - CVE-2026-66816 : apre una nuova finestra - - CVE-2026-66818 : apre una nuova finestra - - CVE-2026-62697 : apre una nuova finestra - - CVE-2026-67381 : apre una nuova finestra - - CVE-2026-67380 : apre una nuova finestra - - CVE-2026-67383 : apre una nuova finestra - - CVE-2026-69321 : apre una nuova finestra - - CVE-2026-67385 : apre una nuova finestra - - CVE-2026-62804 : apre una nuova finestra - - CVE-2026-67384 : apre una nuova finestra - - CVE-2026-69319 : apre una nuova fi

Official advisory ↗
KISA KrCERT/CC · Korean · KNVD-6946MS 9월 보안 위협에 따른 정기 보안 업데이트 권고

| 비즈니스용 Skype 원격 코드 실행 취약성 | | Skype for Business | CVE-2026-66303 | 비즈니스용 Skype 및 Lync 서비스 거부 취약성 | | Skype for Business | CVE-2026-66304 | 비즈니스용 Skype 정보 유출 취약성 | | Skype for Business | CVE-2026-66305 | 비즈니스용 Skype 스푸핑 취약성 | | Skype for Business | CVE-2026-66306 | 비즈니스용 Skype 정보 유출 취약성 | | Skype for Business | CVE-2026-66307 | 비즈니스용 Skype 및 Lync 서비스 거부 취약성 | | Skype for Business | CVE-2026-66308 | 비즈니스용 Skype 및 Lync 서비스 거부 취약성 | | SQL Server | CVE-2026-66814 | Microsoft SQL Server 권한 상승 취약성 | | SQL Server | CVE-2026-66816 | Microsoft SQL Server 보안 기능 바이패스 취약성 | | SQL Server | CVE-2026-66818 | Microsoft SQL Server 권한 상승 취약성 | | SQL Server | CVE-2026-66819 | Microsoft SQL Server 권한 상승 취약성 | | SQL Server | CVE-2026-66820 | SQL 서버 권한 상승 취약성 | | SQL Server | CVE-2026-67368 | Microsoft SQL Server 권한 상승 취약성 | | SQL Server | CVE-2026-67369 | Microsoft SQL Server 정보 유출 취약성 | | SQL Server | CVE-2026-67370 | Microsoft SQL Server 권한 상승 취약성 | | SQL Server | CVE-2026-67373 | Microsoft SQL Server 원격 코드 실행 취약성 | | SQL Server | CVE-2026-67376 | Microsoft SQL Server 서비스 거부 취약성 | | SQL Server | CVE-2026-67378 | Microsoft SQL Server 원격 코드 실행 취약성 | | SQL Server | CVE-2026-67379 | Microsoft SQL Server 원격 코드 실행 취약성 | | SQL Server | CVE-2026-67380 | Microsoft SQL Server 원격 코드 실행 취약성 | | SQL Server | CVE-2026-67381

Official advisory ↗
NCSC-NL · Dutch · NCSC-2026-0350Kwetsbaarheden verholpen in SQL Server

Een kwaadwillende kan de kwetsbaarheden misbruiken om aanvallen uit te voeren die kunnen leiden tot de categorieën schade zoals benoemd in onderstaande tabel. ``` SQL Server: |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2026-47297 | 8,10 | Uitvoeren van willekeurige code | | CVE-2026-66814 | 8,80 | Verkrijgen van verhoogde rechten | | CVE-2026-66816 | 6,50 | Omzeilen van beveiligingsmaatregel | | CVE-2026-66818 | 8,80 | Verkrijgen van verhoogde rechten | | CVE-2026-66819 | 8,80 | Verkrijgen van verhoogde rechten | | CVE-2026-66820 | 8,80 | Verkrijgen van verhoogde rechten | | CVE-2026-67368 | 8,80 | Verkrijgen van verhoogde rechten | | CVE-2026-67369 | 6,50 | Toegang tot gevoelige gegevens | | CVE-2026-67370 | 8,80 | Verkrijgen van verhoogde rechten | | CVE-2026-67373 | 8,80 | Uitvoeren van willekeurige code | | CVE-2026-67376 | 7,50 | Denial-of-Service | | CVE-2026-67378 | 8,50 | Uitvoeren van willekeurige code | | CVE-2026-67379 | 8,50 | Uitvoeren van willekeurige code | | CVE-2026-67380 | 8,80 | Uitvoeren van willekeurige code | | CVE-2026-67381 | 8,80 | Verkrijgen van verhoogde rechten | | CVE-2026-67383 | 6,50 | Toegang tot gevoelige gegevens | | CVE-2026-67384 | 8,80 | Uitvoeren van willekeurige code | | CVE-2026-67385 | 8,80 | Uitvoeren van willekeurige code | | CVE-2026-67386 | 6,50 | Toegang tot gevoelige gegevens | | CVE-2026-67388 | 8,80 | Uitvoeren van willekeurige code | | CVE-2026-67389 | 6,50 | Toegang tot gevoelige gegevens | | CVE-2026-67390 | 6,50 | Toegang tot gevoelige gegevens | | CVE-2026-67393 | 6,50 | Toegang tot gevoelige gegevens | | CVE-2026-67624 | 6,50 | Toegang tot gevoelige gegevens | | CVE-2026-67629 | 6,50 | Toegang tot gevoelige gegevens | | CVE-2026-67630 | 6,50 | Toegang tot gevoelige gegevens | | CVE-2026-67631 | 8,80 | Uitvoeren van willekeurige code | | CVE-2026-67633 | 6,50 | Denial-of-Service | | CVE-2026-67636 | 8,50 | Uitvoeren van willekeurige code | | CVE-2026-67638 | 8,80 | Uitvoeren van willekeurige code | | CVE-2026-67639 | 8,80 | Uitvoeren van willekeurige code | | CVE-2026-67641 | 6,50 | Denial-of-Service | | CVE-2026-67642 | 8,80 | Uitvoeren van willekeurige code | | CVE-2026-67643 | 8,80 | Uitvoeren van willekeurige code | | CVE-2026-67645 | 6,50 | Toegang tot gevoelige gegevens | | CVE-2026-67648 | 6,50 | Toegang tot gevoelige gegevens | | CVE-2026-68775 | 8,80 | Uitvoeren van willekeurige code | | CVE-2026-68776 | 6,50 | Toegang tot gevoelige gegevens | | CVE-2026-68777 | 6,50 | Toegang tot gevoelige gegevens | | CVE-2026-68778 | 6,50 | Toegang tot gevoelige gegevens | | CVE-2026-68779 | 6,50 | Toegang tot gevoelige gegevens | | CVE-2026-68780 | 6,50 | Toegang tot gevoelige gegevens | | CVE-2026-68781 | 6,50 | Toegang tot gevoelige gegevens | | CVE-2026-68784 | 6,50 | Toegang tot gevoelige gegevens | | CVE-2026-68785 | 4,90 | Uitvoeren van willekeurige code | | CVE-2026-68786 | 8,80 | Uitvoeren van willekeurige code | | CVE-2026-68787 | 7,80 | Uitvoeren van willekeurige code | | CVE-2026-69562 | 6,50 | Toegang tot gevoelige gegevens | | CVE-2026-73028 | 8,80 | Verkrijgen van verhoogde rechten | | CVE-2026-73029 | 6,50 | Toegang tot gevoelige gegevens | | CVE-2026-77480 | 8,80 | Verkrijgen van verhoogde rechten | | CVE-2026-77481 | 8,80 | Uitvoeren van willekeurige code | | CVE-2026-77482 | 8,80 | Uitvoeren van willekeurige code | | CVE-2026-77483 | 8,80 | Verkrijgen van verhoogde rechten | | CVE-2026-77484 | 8,80 | Uitvoeren van willekeurige code | | CVE-2026-77485 | 7,00 | Verkrijgen van verhoogde rechten | | CVE-2026-77486 | 8,80 | Uitvoeren van willekeurige code | | CVE-2026-77487 | 8,80 | Verkrijgen van verhoogde rechten | | CVE-2026-77488 | 5,50 | Toegang tot gevoelige gegevens | | CVE-2026-78456 | 8,80 | Uitvoeren van willekeurige code | |----------------|------|-------------------------------------| Windows OLE DB: |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2026-78441 | 6,50 | Toegang tot gevoelige gegevens | | CVE-2026-78442 | 8,80 | Uitvoeren van willekeurige code | |----------------|------|-------------------------------------| ```

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. If business-safe, reduce exposure to the affected interface and allow only trusted sources until authoritative guidance is available.
04

Evidence and provenance

Published 8 Sept 2026 · Last source change 11 Sept 2026, 22:17 UTC · CWE-89 · Improper Neutralization of Special Elements used in an SQL Command ('SQL 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 2026-09-09
European sourceENISA EUVD · EUVD-2026-73814
Product sourceCNA
Remediation sourceCVE/CNA references
CWE sourceOther authority
NVD statusNVD awaiting enrichment

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

Material change intelligence

What changed after publication

View recent updates ↗
  1. Affected versionsThe structured affected or fixed version information changed.
    Before
    14.0.0 < 14.0.3550.4; 14.0.0 < 14.0.2130.4; 15.0.0.0 < 15.0.4490.9; 15.0.0 < 15.0.2190.7; 16.0.0.0 < 16.0.4275.2; 16.0.0 < 16.0.1200.5; 17.0.0.0 < 17.0.4085.5; 17.0.1050.2 < 17.0.1135.8 · Fixed: No fixed version is explicitly recorded in the structured CVE data.
    After
    Microsoft SQL Server 2017 (CU 31): 14.0.0 < 14.0.3550.4; Microsoft SQL Server 2017 (GDR): 14.0.0 < 14.0.2130.4; Microsoft SQL Server 2019 (CU 32): 15.0.0.0 < 15.0.4490.9; Microsoft SQL Server 2019 (GDR): 15.0.0 < 15.0.2190.7; Microsoft SQL Server 2022 (CU 26): 16.0.0.0 < 16.0.4275.2; Microsoft SQL Server 2022 (GDR): 16.0.0 < 16.0.1200.5; Microsoft SQL Server 2025 (CU8): 17.0.0.0 < 17.0.4085.5; Microsoft SQL Server 2025 for x64-based Systems (GDR): 17.0.1050.2 < 17.0.1135.8 · Fixed: No fixed version is explicitly recorded in the structured CVE data.
    CNA ↗
  2. ENISA EUVD mappingEUVD-2026-73814 was added to the official ENISA EUVD mapping for this CVE.
    Before
    not recorded
    After
    {"euvdId":"EUVD-2026-73814"}
    ENISA EUVD ↗
  3. Catalogue recordCVE added to the BlackTree catalogue.
    CNA ↗
Material fields only · duplicate refreshes suppressed · history retained for the configured operational retention period
CVE published
ENISA EUVD · EUVD-2026-73814↗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-2026-66819 · cve.blacktree.nl