Security readout for executives and security teams
Plain-English summary
CVE-2019-1026 is a Windows Audio Service privilege-escalation flaw. A logged-in attacker could use a crafted application to gain elevated privileges. It does not provide initial remote access by itself, but it can make another compromise much worse by helping an attacker take stronger control of the machine.
Executive priority
Treat as high priority for affected Windows fleets, especially where users can run local applications or where servers are used for administration. This is not a standalone remote entry point, but it can significantly increase attacker impact after initial access.
Technical view
The vulnerability is local, low-complexity, requires low privileges, and needs no user interaction. Microsoft states successful exploitation could allow arbitrary code with elevated privileges. The affected service handling was corrected by a Microsoft update. CVSS 3.1 is 7.8 with high confidentiality, integrity, and availability impact.
Likely exposure
Exposure is likely limited to Windows 10 versions 1803, 1809, 1903 and related Windows Server 1803, 1903 Server Core, and Windows Server 2019 installations that have not applied the relevant Microsoft security update.
Exploitation context
The source bundle does not show CISA KEV listing or active exploitation. Microsoft describes exploitation as running a specially crafted application locally. The CVSS vector includes proof-of-concept exploit maturity, but no source here establishes current in-the-wild exploitation.
Researcher notes
Key constraints are local attack vector, low required privileges, no user interaction, unchanged scope, and high CIA impact. Evidence does not include root-cause detail, exploit procedure, specific KB numbers, or telemetry showing active exploitation.
Mitigation direction
- Apply the relevant Microsoft security update for CVE-2019-1026.
- Use MSRC guidance to map affected builds to the correct update package.
- Prioritize shared workstations, jump hosts, and exposed server administration environments.
- Upgrade or retire affected systems that cannot receive Microsoft updates.
- Limit local application execution rights where patching is delayed.
Validation and detection
- Inventory Windows builds against the affected product list.
- Confirm installed updates cover MSRC CVE-2019-1026 for each build.
- Check vulnerability scanner findings against actual Windows version and patch level.
- Verify high-value endpoints and Server Core systems are included.
- Document exceptions where systems remain unpatched or unsupported.
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.
Execution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program 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-2019-1026 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
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
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.
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:H/E:P/RL:O/RC:C1.85.9Primary 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/E:P/RL:O/RC:C
Source materials
- CVE List V5 sourceCVE List V5
- Windows Audio Service Elevation of Privilege VulnerabilityCVE reference · vendor-advisory
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1026CVE reference · x_refsource_MISC, x_transferred
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.