Security readout for executives and security teams
Plain-English summary
A logged-in attacker with limited Windows privileges could abuse the UPnP service to gain substantially greater control without user interaction. Because CISA lists this vulnerability as known exploited, unremediated affected Windows endpoints and servers should be treated as credible post-compromise escalation targets.
Executive priority
Treat as a high-priority remediation and threat-hunting item because exploitation is documented through CISA KEV. Focus first on critical servers, privileged workstations, unsupported systems, and hosts with suspicious activity. Local access is required, but successful exploitation could materially expand an existing intrusion.
Technical view
CVE-2019-1405 is a Windows UPnP service elevation-of-privilege flaw involving improper COM object creation. It requires local access and low privileges, has low attack complexity, and needs no user interaction. Its CVSS 3.1 score is 7.8, with potentially high confidentiality, integrity, and availability impact.
Likely exposure
Exposure applies to the listed Windows and Windows Server releases, including Windows 7, 8.1, multiple Windows 10 releases, and Server 2008 through 2019 variants. Risk is greatest where affected systems remain unremediated and an attacker already has local low-privilege access. The bundle provides no definitive remote attack path.
Exploitation context
CISA KEV status supports known exploitation in the wild. The supplied evidence does not identify exploitation dates, campaigns, threat actors, prevalence, or the specific attack chain. This is a local privilege-escalation vulnerability, so exploitation generally follows initial system access.
Researcher notes
The evidence establishes improper COM object creation in the Windows UPnP service, local low-privilege prerequisites, no user interaction, and high potential impact. It does not provide patch identifiers, affected build boundaries, exploit mechanics, telemetry signatures, or campaign details. Consult Microsoft’s advisory for release-specific remediation and verification information.
Mitigation direction
- Review Microsoft’s CVE-2019-1405 advisory for the applicable remediation for each Windows release.
- Prioritize affected systems that are internet-facing, privileged, business-critical, or already showing compromise indicators.
- Apply Microsoft-supported remediation through the organisation’s normal tested patch-management process.
- Restrict local access and unnecessary account privileges until affected systems are confirmed remediated.
- Replace or isolate unsupported Windows releases when Microsoft remediation cannot be obtained.
Validation and detection
- Inventory Windows editions, versions, architectures, and server installation types against the affected list.
- Use Microsoft’s advisory to determine the required remediation state for each identified system.
- Confirm remediation deployment and successful installation through endpoint or patch-management records.
- Identify affected hosts where the UPnP service is present as a prioritization signal, not definitive vulnerability proof.
- Review endpoint telemetry for unexplained privilege elevation or suspicious COM activity around the UPnP service.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-269: Authorization and privilege behavior lookup
Authorization weaknesses can support privilege escalation and valid-account review, depending on exploit path. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupPrivilege behavior lookup
The CVE wording references privilege impact, so privilege escalation and authorization behavior review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2019-1405 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 7.8 (3.1)
- Known Exploited
- Yes
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CISA KEV status
SSVC decision data
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H1.85.9CISA-ADPVulnerability scoring details
Base CVSS 3.1 score
7.8HighVector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- Added to KEVCISA-ADP
CISA Known Exploited Vulnerabilities metadata lists this CVE as known exploited.
- ADP timelineCISA-ADP
CVE-2019-1405 added to CISA KEV
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
- 2022-03-15T00:00:00.000Z: CVE-2019-1405 added to CISA KEV
Source materials
- CVE List V5 sourceCVE List V5
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1405CVE reference, microsoft · x_refsource_MISC
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-1405CVE reference, CISA-ADP · government-resource
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Privilege Management
Improper Privilege Management represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.