Security readout for executives and security teams
Plain-English summary
CVE-2026-28211 affects the NVDA Dev & Test Toolbox add-on. If a user opens a malicious log file and uses the add-on’s Log Reader commands, attacker-supplied Python expressions in the log may run as that user. This is serious for users who handle external logs, but it requires user interaction.
Executive priority
Prioritize remediation for accessibility, development, QA, and support teams using NVDA with this add-on. The issue can lead to full user-level compromise from a malicious file, but it is not described as remotely exploitable without user action.
Technical view
Versions 2.0 through 8.0 of CyrilleB79 NVDA-Dev-Test-Toolbox process speech log entries unsafely in Log Reader. Crafted log content can be evaluated as Python when read through log navigation commands, causing arbitrary code execution with current-user privileges. CVSS is 7.8, local attack vector, low complexity, no privileges required, user interaction required.
Likely exposure
Exposure is limited to systems running the NVDA Dev & Test Toolbox add-on versions 2.0 through 8.0, especially where users open log files from other people, issue trackers, email, chats, or test environments.
Exploitation context
The available sources describe exploitation by social engineering: convincing a user to open a crafted log file and analyze it using Log Reader commands. The source bundle does not indicate CISA KEV listing or active exploitation in the wild.
Researcher notes
The advisory names affected versions as 2.0 through 8.0 and states version 9.0 fixes the issue. The commit and release are cited, but this assessment does not infer additional affected products or exploit availability beyond the provided sources.
Mitigation direction
- Upgrade NVDA Dev & Test Toolbox to version 9.0 or later.
- Avoid Log Reader commands on untrusted log files until upgraded.
- Disable gestures for affected log navigation commands as vendor workaround.
- Warn users not to inspect unsolicited logs with vulnerable add-on versions.
- Check vendor advisory and release notes for any updated guidance.
Validation and detection
- Inventory NVDA installations for the Dev & Test Toolbox add-on.
- Confirm installed add-on version is 9.0 or later.
- Identify users who receive or analyze external NVDA log files.
- Verify Log Reader workaround gestures are disabled where upgrade is delayed.
- Review change management records for the version 9.0 update.
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
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ATT&CK lookup starting points
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CWE-943: Database access and collection lookup
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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-2026-28211 mapping review
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Open ATT&CK lookup- Severity
- High
- CVSS
- 7.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/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.
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:N/UI:R/S:U/C:H/I:H/A:H1.85.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.8HighVector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/CyrilleB79/NVDA-Dev-Test-Toolbox/security/advisories/GHSA-39pg-6xpm-mjgfCVE reference · x_refsource_CONFIRM
- https://github.com/CyrilleB79/NVDA-Dev-Test-Toolbox/commit/21a0544432b08971b5d18320e8256be12c610beaCVE reference · x_refsource_MISC
- https://github.com/CyrilleB79/NVDA-Dev-Test-Toolbox/releases/tag/V9.0CVE reference · x_refsource_MISC
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 Neutralization of Special Elements in Data Query Logic
Improper Neutralization of Special Elements in Data Query Logic represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.