CVE-2026-28211 Arbitrary code execution in log reader via untrusted log file
Attackers can execute arbitrary code by tricking users into opening malicious log files in the NVDA Dev & Test Toolbox add-on.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-28211?
CVE-2026-28211 is a high-severity code injection vulnerability in CyrilleB79 NVDA-Dev-Test-Toolbox, published on 26 Feb 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
The NVDA Dev & Test Toolbox is an NVDA add-on for gathering tools to help NVDA development and testing. A vulnerability exists in versions 2.0 through 8.0 in the Log Reader feature of this add-on. A maliciously crafted log file can lead to arbitrary code execution when a user reads it with log reader commands. The log reading command process speech log entries in an unsafe manner. Python expressions embedded in the log may be evaluated when when speech entries are read with log reading commands. An attacker can exploit this by convincing a user to open a malicious crafted log file and to analyze it using the log reading commands. When the log is read, attacker-controlled code may execute with the privileges of the current user. This issue does not require elevated privileges and relies solely on user interaction (opening the log file). Version 9.0 contains a fix for the issue. As a workaround, avoid using log reading commands, or at least, commands to move to next/previous log message (any message or commands for each type of message). For more security, one may disable their gestures in the input gesture dialog.
Weakness: CWE-943
Which versions are affected by CVE-2026-28211?
How do I fix CVE-2026-28211?
No fix has been published for CVE-2026-28211 yet. Limit exposure of the affected software until one is available.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2026-28211 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-28211 exists.
Sources
Also known as GHSA-39pg-6xpm-mjgf.