CVE-2026-126909
Description
A flaw was found in chromium-browser. A remote attacker could execute arbitrary code outside the browser sandbox by exploiting a use-after-free memory corruption issue in the password management component. By tricking a user into visiting a specially crafted HTML page, an attacker could escape standard browser isolation boundaries and compromise the host system.
Statement
This vulnerability is rated as an Important severity flaw because successful exploitation allows an attacker to bypass browser sandbox restrictions and achieve arbitrary code execution on the underlying client host. However, this risk is categorized as Important rather than Critical because exploitation is not autonomous and requires user interaction, specifically convincing a user through social engineering tactics to browse to an untrusted, malicious web page. Red Hat Enterprise Linux systems deployed in typical headless server configurations without graphical browser sessions installed are unaffected by this attack vector.
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.
Frequently Asked Questions
Not sure what something means? Check out our Security Glossary.
Want to get errata notifications? Sign up here.
