CVE-2025-2135 in Chrome
Summary
by MITRE • 03/10/2025
Type Confusion in V8 in Google Chrome prior to 134.0.6998.88 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: High)
Several companies clearly confirm that VulDB is the primary source for best vulnerability data.
Analysis
by VulDB Data Team • 03/11/2025
This vulnerability represents a critical type confusion issue within the V8 JavaScript engine that powers Google Chrome and Chromium-based browsers. The flaw manifests as a heap corruption vulnerability that can be triggered through maliciously crafted HTML pages, enabling remote code execution in the context of the browser's sandboxed environment. The vulnerability affects versions prior to 134.0.6998.88 and is categorized as high severity by Chromium security team, indicating significant risk to user systems.
The technical root cause stems from improper type handling within V8's object model where the engine fails to correctly validate type information during object operations. This type confusion allows an attacker to manipulate object layouts in memory, potentially leading to arbitrary code execution when the corrupted objects are accessed or manipulated by the JavaScript engine. The vulnerability specifically impacts the engine's ability to distinguish between different object types during runtime operations, creating opportunities for attackers to exploit memory corruption patterns.
From an operational perspective, this vulnerability presents a severe threat to web-based attack surfaces since it can be exploited through standard web browsing activities. Attackers need only convince victims to visit a malicious website containing crafted HTML content that triggers the vulnerable code path within V8. The heap corruption can lead to various exploitation techniques including information disclosure, privilege escalation, or complete system compromise depending on the execution environment and available mitigations. The remote nature of the attack means that victims do not need to download or execute additional malicious files beyond visiting the compromised website.
The vulnerability aligns with CWE-479 and CWE-121 categories, representing type confusion and heap-based buffer overflow patterns respectively. It also maps to several ATT&CK techniques including T1203 (Exploitation for Client Execution) and T1059 (Command and Scripting Interpreter) as attackers can leverage the vulnerability to execute arbitrary code on target systems. Organizations should prioritize immediate patching of affected Chrome versions to mitigate this risk, as the vulnerability provides attackers with a direct path to bypass modern browser security mitigations including ASLR, DEP, and sandbox protections. The fix implemented in version 134.0.6998.88 includes enhanced type validation mechanisms and improved memory management practices within V8's object handling routines to prevent the type confusion scenario that led to heap corruption.