Security readout for executives and security teams
Plain-English summary
CVE-2019-0797 is a Windows privilege-escalation flaw in Win32k. An attacker who already has low-level local access could gain higher privileges on affected Windows desktops or servers. Because CISA lists it in KEV, real-world exploitation is confirmed.
Executive priority
Prioritize remediation where affected Windows systems remain unpatched. KEV listing raises urgency because attackers have used this vulnerability, but local access requirements mean risk is highest after phishing, malware, or compromised accounts.
Technical view
Microsoft describes improper memory object handling in the Windows Win32k component. The CVSS 3.1 vector is local, low complexity, low privileges required, no user interaction, with high confidentiality, integrity, and availability impact. It is distinct from CVE-2019-0808.
Likely exposure
Exposure is likely on unpatched affected Windows 8.1, RT 8.1, Windows 10 through version 1809, and Windows Server 2012 through 2019, including Core installations. The flaw requires local access or an existing foothold.
Exploitation context
CISA KEV status supports known exploitation in the wild. The available bundle does not provide exploit-chain details, public exploit status, or observed targets. Treat it as a post-compromise privilege-escalation risk, not a standalone remote entry point.
Researcher notes
Focus validation on patch state and affected OS build coverage. The bundle does not include CWE mapping, exploit procedure, KB identifiers, or mitigation alternatives beyond vendor guidance. Avoid assuming exposure outside the listed Microsoft Windows and Windows Server versions.
Mitigation direction
- Review Microsoft MSRC guidance for CVE-2019-0797.
- Apply applicable Microsoft security updates to affected Windows systems.
- Prioritize internet-facing, high-value, and multi-user Windows servers.
- Retire or isolate unsupported affected Windows versions.
- Monitor CISA KEV-driven remediation requirements.
Validation and detection
- Inventory Windows versions against the affected product list.
- Confirm installed Microsoft security updates cover CVE-2019-0797.
- Check vulnerability scanner findings for remaining exposed hosts.
- Verify Windows Server Core installations are included.
- Review endpoint telemetry for suspicious privilege-escalation behavior.
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.
Privilege 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-2019-0797 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-2019-0797CVE reference · x_refsource_CONFIRM
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-0797CVE 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.