Security Resilience

CVE-2019-1388

LPE in Microsoft Windows 10 1709

CISA KEVActive ExploitationEUVD ExploitedRansomware-linkedLPE
Published
12 November 2019
Modified
29 October 2025
KEV Added
07 April 2023
Patch / advisory
CVSS Score v3.1 7.8
Click a component to see what it means
Raw vectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.086 95th percentile
Risk Priority 83 floored blend · peak EPSS

CVSS and EPSS are reproduced from their sources (NVD, FIRST EPSS). Risk Priority is our own derived reading, not an NVD score.

Summary

CVE-2019-1388 is a high-severity Improper Privilege Management (CWE-269) vulnerability in Microsoft Windows 10 1709. Its CVSS base score is 7.8 (High).

Operationally, ranked in the top 5% of CVEs by exploit likelihood; CISA has added it to the Known Exploited Vulnerabilities catalog.

Deeper analysis AI-assisted summary

Synthesised by an AI model from the NVD description and linked references — a reading aid, not an authoritative source.

An elevation of privilege vulnerability exists in the Windows Certificate Dialog when it does not properly enforce user privileges. The flaw, tracked as CVE-2019-1388 and assigned CWE-269, affects the Windows Certificate Dialog component and carries a CVSS 3.1 score of 7.8 reflecting local attack vector, low complexity, and low privileges required.

A local attacker with existing low-privileged access can exploit the issue without user interaction to obtain full control over confidentiality, integrity, and availability on the affected system, enabling privilege escalation to higher rights.

Microsoft has published patches and guidance through its Security Response Center advisory, while the Zero Day Initiative has released a corresponding advisory detailing the issue. The vulnerability appears in CISA's catalog of known exploited vulnerabilities, confirming active real-world exploitation.

OWASP Top 10 for Web (2025)

EU & UK References

Vulnerability Data

An elevation of privilege vulnerability exists in the Windows Certificate Dialog when it does not properly enforce user privileges, aka 'Windows Certificate Dialog Elevation of Privilege Vulnerability'.

CWE(s)
KEV Date Added
07 April 2023

Related Threats

CVEs Like This One

CVE-2019-1405Same product: Microsoft Windows 10 1507both on KEV
CVE-2019-1215Same product: Microsoft Windows 10 1507both on KEV
CVE-2019-0903Same product: Microsoft Windows 10 1507both on KEV
CVE-2020-1020Same product: Microsoft Windows 10 1507both on KEV
CVE-2019-0863Same product: Microsoft Windows 10 1507both on KEV
CVE-2019-1214Same product: Microsoft Windows 10 1507both on KEV
CVE-2019-1429Same product: Microsoft Windows 10 1507both on KEV
CVE-2024-26169Same product: Microsoft Windows 10 1507both on KEV
CVE-2020-0787Same product: Microsoft Windows 10 1507both on KEV
CVE-2020-1054Same product: Microsoft Windows 10 1507both on KEV

Affected Assets

microsoft
windows 10 1507
all versions
microsoft
windows 10 1607
all versions
microsoft
windows 10 1709
all versions
microsoft
windows 10 1803
all versions
microsoft
windows 10 1809
all versions
microsoft
windows 10 1903
all versions
microsoft
windows 7
all versions
microsoft
windows 8.1
all versions
microsoft
windows rt 8.1
all versions
microsoft
windows server 1903
all versions
+4 more product configuration(s) — see NVD for full list

Mitigating Controls

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

addresses: CWE-269

Policy addresses roles, responsibilities, and privilege management to prevent improper privilege assignments.

addresses: CWE-269

Access supervision ensures privileges are assigned and managed without improper escalation or retention.

addresses: CWE-269

Assigning group/role memberships and access authorizations (privileges) while reviewing accounts addresses improper privilege management.

addresses: CWE-269

Enforces proper privilege management by requiring all decisions through the verified reference monitor.

addresses: CWE-269

By mandating division of duties across roles, the control enforces proper privilege management and prevents a single entity from controlling an entire sensitive process.

addresses: CWE-269

Implements core proper privilege management by restricting to only required rights.

addresses: CWE-269

Policy requires training on privilege management and least privilege, making it harder to exploit improper privilege management weaknesses.

addresses: CWE-269

Training covers proper privilege management practices, making incorrect privilege assignments less likely.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

blocks

A.5.15 directly mandates determining access requirements, defining/enforcing topic-specific access control policy, assigning rights/restrictions by entity/role, consistency with classification, need-to-know, privileged access restrictions, segregation, formal authorization, and dynamic rules — which stops most improper privilege management from being exploitable; bounded remainder is flawed implementation of those rules (e.g. incorrect mapping or enforcement bugs).

blocks

A.5.18 directly governs the provisioning, review, modification and timely revocation of access rights (including for role changes, termination and privilege levels), which stops most improper privilege spheres from being exploitable even if the assignment flaw exists; the bounded remainder is flaws in the underlying enforcement mechanism itself (e.g. AC-3/A.8.3)

blocks

Defining and communicating authorization levels for each role limits the assignment of excessive or unnecessary privileges.

A.8.15 Logging partial match
finds

Logging every use of privileges and protecting those records makes it harder for an attacker who has obtained elevated rights to operate without leaving evidence.

blocks

A.8.2 directly controls the identification, allocation, review, expiry, temporary use, and separation of privileged rights per policy, which prevents most improper privilege management (CWE-269) by design; the bounded remainder is flawed tracking/checking logic inside the product's own enforcement code (the AC-3 slice of 269).

blocks

A.8.27 mandates security-by-design principles including least privilege, default deny, fail securely, defence in depth, security architecture integration, hardening, and zero-trust verification of every request; these directly stop most improper privilege spheres from being exploitable even if the assignment flaw remains, with a bounded remainder (e.g. certain legacy or safety-overridden controls).

Hardening callouts derived

DISA STIG baselines are authored against specific weaknesses. Where this CVE cites a broad weakness class, the mapping is not asserted at that abstraction (owner ruling, 2026-09-25: grade only at Base and below), so no rule is shown here rather than a rule shown against the wrong grain.

References