Security readout for executives and security teams
Plain-English summary
CVE-2026-47092 affects Claude HUD through 0.0.12 on Windows. A local attacker who can control the COMSPEC environment variable can make Claude HUD run an attacker-chosen program during its version check. This can lead to full compromise of the affected user context.
Executive priority
Prioritize remediation where Claude HUD runs on Windows developer systems or shared endpoints. The vulnerability is high severity but requires local access, so urgency depends on whether attackers can influence local environment variables on affected machines.
Technical view
Claude HUD’s version check trusted COMSPEC when invoking execFile(). On Windows, a local attacker with low privileges could set COMSPEC to an arbitrary executable path, causing that binary to run with cmd.exe-style arguments. The issue is classified as CWE-427 and is reported patched in commit 234d9aa.
Likely exposure
Exposure is limited to Windows systems running Claude HUD through 0.0.12 or code before commit 234d9aa. The source bundle does not identify non-Windows impact, hosted-service exposure, or a named fixed release package.
Exploitation context
The CVSS vector is local, low complexity, low privilege, and no user interaction. The bundle states KEV is false and provides no evidence of active exploitation. Treat this as a local privilege-adjacent workstation or developer-environment risk, not a remote internet-facing vulnerability.
Researcher notes
Evidence supports arbitrary command execution through COMSPEC manipulation during a version check. The bundle names a patch commit but not a fixed release version. Avoid assuming exploit availability or broader platform impact without vendor confirmation.
Mitigation direction
- Update Claude HUD to a build containing commit 234d9aa or later.
- If no release is available, follow the vendor repository guidance before deploying.
- Prioritize Windows developer workstations and shared systems using Claude HUD.
- Restrict untrusted local users from environments where Claude HUD is executed.
- Monitor vendor issue, pull request, and advisory pages for release clarification.
Validation and detection
- Inventory Windows hosts for Claude HUD installations at or before 0.0.12.
- Verify deployed source includes commit 234d9aa or equivalent fix.
- Review user and system COMSPEC values for unexpected executable paths.
- Check endpoint telemetry for unusual child processes launched by Claude HUD.
- Confirm whether any affected hosts allow untrusted local user access.
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.
CWE-427: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupExecution 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-2026-47092 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
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.
SSVC decision data
CVSS vector scores
2 official scoresWe 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:H1.85.9VulnCheckCVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N——VulnCheckVulnerability scoring details
Base CVSS 4.0 score
7.3HighVector: CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
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
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/jarrodwatts/claude-hud/issues/485CVE reference, VulnCheck · issue-tracking
- https://github.com/jarrodwatts/claude-hud/pull/487CVE reference, VulnCheck · issue-tracking
- https://github.com/jarrodwatts/claude-hud/commit/234d9aad919b51326a43bcf90b45ae35c23afc30CVE reference, VulnCheck · patch
- https://www.vulncheck.com/advisories/claude-hud-arbitrary-command-execution-via-comspec-environment-variableCVE reference, VulnCheck · third-party-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.
Uncontrolled Search Path Element
Uncontrolled Search Path Element represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.