Security readout for executives and security teams
Plain-English summary
CVE-2019-1215 is a Windows privilege escalation flaw. An attacker who already has low-privileged local access could potentially gain higher system rights. It is not described as a remote initial-entry bug, but CISA KEV status makes it operationally important for exposed Windows fleets.
Executive priority
Treat this as a high-priority patch governance issue because it is a known exploited Windows elevation-of-privilege vulnerability. It is most urgent where attackers could pair it with phishing, stolen credentials, or another foothold.
Technical view
The vulnerability is in ws2ifsl.sys, associated with Winsock, where Windows handles objects in memory. The CVSS vector is local, low complexity, low privileges required, no user interaction, with high confidentiality, integrity, and availability impact. The mapped weakness is CWE-269, improper privilege management.
Likely exposure
Organizations may be exposed if they still run the listed Windows client or Windows Server versions, including Windows 7, 8.1, 10 releases through 1903, and Server 2008 through 2019 variants.
Exploitation context
CISA KEV status indicates known exploitation. The source bundle does not provide campaign details, exploit mechanics, or whether exploitation is widespread today. CVSS indicates exploitation requires local access and low privileges.
Researcher notes
Evidence supports a local privilege escalation in Windows ws2ifsl.sys with KEV-listed exploitation. The provided bundle does not include exploit details, patch KBs, or telemetry indicators, so validation should focus on affected build inventory and Microsoft advisory status.
Mitigation direction
- Review Microsoft MSRC guidance for CVE-2019-1215 and apply listed security updates.
- Prioritize remediation on internet-facing servers, shared workstations, and high-value Windows assets.
- Retire, isolate, or tightly control unsupported affected Windows versions.
- Restrict unnecessary local user access on affected systems until remediation is confirmed.
Validation and detection
- Inventory Windows endpoints and servers against the affected version list.
- Confirm patch status using enterprise endpoint management or vulnerability scanning tools.
- Check whether CVE-2019-1215 remains open in vulnerability management records.
- Review endpoint telemetry for suspicious local privilege escalation activity on affected hosts.
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-2019-1215 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
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:H1.85.9Primary CVE scoreVulnerability 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
Source materials
- CVE List V5 sourceCVE List V5
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1215CVE reference · x_refsource_MISC
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-1215CVE reference · 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.