Security readout for executives and security teams
Plain-English summary
This is a Hyper-V guest-to-host escape risk. An authenticated user inside a guest operating system could run a crafted application that causes the Hyper-V host to execute arbitrary code. Successful exploitation could compromise the host and other workloads it controls.
Executive priority
Treat as high priority for Hyper-V environments. The business risk is host compromise from a guest, which can affect multiple workloads. Patch affected hosts promptly, starting with shared or less trusted virtualization environments.
Technical view
Windows Hyper-V fails to properly validate input from an authenticated guest OS user. The CVSS 3.1 score is 8.8, with low complexity, low privileges required, no user interaction, and high confidentiality, integrity, and availability impact. Microsoft states the update corrects guest input validation.
Likely exposure
Exposure is most relevant to Microsoft Hyper-V hosts running the affected Windows client and server versions listed by Microsoft, especially where guest workloads are accessible to low-privileged authenticated users.
Exploitation context
The bundle does not cite active exploitation and KEV is false. The CVSS vector includes proof-of-concept exploit maturity, but no public source here confirms weaponized exploitation or attacks in the wild.
Researcher notes
Focus validation on guest-to-host trust boundaries, affected OS builds, and update presence. The provided sources do not include exploit details, workarounds, or active exploitation evidence; avoid assuming broader product impact beyond the listed Microsoft platforms.
Mitigation direction
- Apply Microsoft security updates for CVE-2019-0722 to affected Hyper-V hosts.
- Use Microsoft guidance to identify the correct update for each Windows version.
- Prioritize hosts running untrusted or multi-tenant guest workloads.
- Limit guest OS access on affected hosts until patching is complete.
Validation and detection
- Inventory Hyper-V hosts and map them to the affected Windows versions.
- Verify installed Microsoft updates against the CVE-2019-0722 advisory.
- Confirm whether guest users can authenticate on exposed virtual machines.
- Document any unpatched hosts and compensating access restrictions.
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 lookupCVE-2019-0722 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
- 8.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/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:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C2.85.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
8.8HighVector: CVSS:3.1/AV:N/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 Hyper-V Remote Code Execution VulnerabilityCVE reference · vendor-advisory
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0722CVE 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.