CVE-2026-126851
Description
A flaw was found in the Accessibility component of Chromium. A remote attacker could exploit this vulnerability by enticing a user to visit a specially crafted HTML page, triggering a use-after-free memory error. Successful exploitation may allow an attacker to execute arbitrary code inside the browser's sandbox environment.
Statement
This vulnerability is rated as Important severity because it enables remote code execution if a user visits a malicious website, though the resulting compromise is initially confined within the renderer sandbox. In typical Red Hat Enterprise Linux desktop environments where chromium-browser is utilized for interactive web browsing, successful exploitation allows an untrusted page to compromise the rendering process. Full host compromise is prevented unless chained with an independent sandbox escape flaw.
Mitigation
Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.
Understanding the Weakness (CWE)
Confidentiality
Technical Impact: Read Memory
If the expired pointer is used in a read operation, an attacker might be able to control data read in by the application.
Availability
Technical Impact: DoS: Crash, Exit, or Restart
If the expired pointer references a memory location that is not accessible to the product, or points to a location that is "malformed" (such as NULL) or larger than expected by a read or write operation, then a crash may occur.
Integrity,Confidentiality,Availability
Technical Impact: Execute Unauthorized Code or Commands
If the expired pointer is used in a function call, or points to unexpected data in a write operation, then code execution may be possible.
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