Security readout for executives and security teams
Plain-English summary
This is a high-severity Microsoft Windows Server Network File System remote code execution flaw. A successful attack could compromise confidentiality, integrity, and availability, but the published CVSS data indicates high attack complexity and requires low privileges. No provided source indicates active exploitation.
Executive priority
Treat as a priority server-side patching item, especially for file-sharing infrastructure. It is serious because successful exploitation could fully compromise a server, but available evidence does not support emergency active-exploitation handling.
Technical view
CVE-2022-22039 affects multiple Windows Server releases, including Server Core variants, from Windows Server 2008 through Windows Server 2022. CVSS 3.1 is 7.5 with AV:N/AC:H/PR:L/UI:N and high confidentiality, integrity, and availability impact. Microsoft lists an official remediation.
Likely exposure
Exposure is most likely on affected Windows Server systems where Microsoft Network File System functionality is present or reachable. Internet or broadly reachable internal NFS services deserve priority, but the source bundle does not prove which deployments have the vulnerable component enabled.
Exploitation context
The bundle does not show active exploitation: KEV is false and exploit maturity is marked unproven. The flaw is network-reachable, needs no user interaction, but has high attack complexity and requires low privileges.
Researcher notes
The public bundle is sparse beyond affected products, CVSS, and Microsoft’s advisory. Validation should focus on affected OS versions, NFS service presence, patch state, and reachability. Avoid assuming exploit availability or deployment-specific preconditions not stated by sources.
Mitigation direction
- Apply Microsoft’s official remediation for the affected Windows Server versions.
- Prioritize servers exposing or using Windows Network File System services.
- Restrict NFS network reachability while remediation is being scheduled.
- Check Microsoft’s advisory for version-specific update requirements.
- Retire or isolate unsupported legacy Windows Server deployments.
Validation and detection
- Inventory Windows Server 2008 through 2022 systems, including Server Core installations.
- Identify hosts with Network File System roles or services enabled.
- Confirm Microsoft’s relevant security update is installed on affected hosts.
- Review network exposure for NFS-related services and trusted access paths.
- Document exceptions where remediation cannot be immediately applied.
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-2022-22039 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
- 7.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/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:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C1.65.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.5HighVector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
Source materials
- CVE List V5 sourceCVE List V5
- Windows Network File System Remote Code Execution VulnerabilityCVE reference · vendor-advisory
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.