Security readout for executives and security teams
Plain-English summary
CVE-2026-22715 is a VMware Workstation and Fusion NAT networking flaw. A malicious administrator inside one guest VM may be able to interrupt or intercept network connections belonging to other guest VMs. This is most relevant on shared developer, testing, lab, or desktop virtualization systems where multiple VMs use NAT networking.
Executive priority
Treat as a moderate-priority desktop virtualization issue. It is not reported as actively exploited, but it can affect confidentiality of VM network traffic in shared NAT environments. Patch during the next standard endpoint or lab maintenance cycle, sooner for mixed-trust VM hosts.
Technical view
The issue is described as a logic flaw in network packet management affecting VMware Workstation and Fusion NAT behavior. The advisory assigns CVSS 3.1 score 5.9, medium severity, with high integrity impact and low availability impact. Remediation is to upgrade VMware Workstation or Fusion to version 25H2U1.
Likely exposure
Exposure is likely limited to systems running VMware Workstation or Fusion with multiple guest VMs using NAT networking, especially where untrusted or separately controlled guests coexist. The provided data does not identify server-side VMware products as affected.
Exploitation context
The stated attack vector requires a malicious actor with administrative privileges on a guest VM. There is no KEV listing and no provided source claims active exploitation. The CVSS vector notes adjacent attack complexity and high attack complexity, suggesting exploitation is constrained.
Researcher notes
Source data has a small inconsistency: the CVSS vector lists PR:N, while the description says the attacker has administrative privileges on a guest VM. Use the vendor advisory as the remediation authority. No public exploit details or additional mitigations are provided in the bundle.
Mitigation direction
- Upgrade VMware Workstation or Fusion to version 25H2U1 per the vendor advisory.
- Prioritize hosts running multiple NAT-connected guest VMs from different trust levels.
- Avoid co-locating untrusted guest VMs with sensitive NAT-connected guest workloads until upgraded.
- Review Broadcom VMware guidance for any product-specific upgrade prerequisites or notes.
Validation and detection
- Inventory VMware Workstation and Fusion installations across endpoints and lab systems.
- Check installed versions against the vendor advisory and confirm 25H2U1 deployment.
- Identify hosts where multiple guest VMs share NAT networking.
- Confirm whether any guest VMs are administered by untrusted users or teams.
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.
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Open ATT&CK lookupCVE-2026-22715 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
- Medium
- CVSS
- 5.9 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:L
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:A/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:L1.64.2Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
5.9MediumVector: CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:L
Source materials
- CVE List V5 sourceCVE List V5
- https://support.broadcom.com/web/ecx/support-content-notification/-/external/content/SecurityAdvisories/0/36986CVE 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.
Improper Restriction of Communication Channel to Intended Endpoints
Improper Restriction of Communication Channel to Intended Endpoints represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.