CVE-2026-87444 in Chrome
Summary
by MITRE • 09/09/2026
Memory corruption in Codecs in Google Chrome prior to 153.0.8010.36 allowed a remote attacker to execute arbitrary code inside the sandbox via a crafted HTML page. (Chromium security severity: High)
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Analysis
by VulDB Data Team • 09/09/2026
The vulnerability identified involves a critical memory corruption flaw within the codec subsystem of Google Chrome, specifically affecting versions prior to 153.0.8010.36. This defect resides in the components responsible for processing multimedia data streams, which are integral to rendering audio and video content on web pages. The severity is classified as high by Chromium security standards due to the potential for arbitrary code execution within a sandboxed environment. Typically, browser sandboxes isolate untrusted web content from the underlying operating system to limit the impact of exploits. However, memory corruption vulnerabilities in core processing libraries can sometimes allow attackers to bypass these isolation mechanisms if they successfully manipulate heap or stack structures to gain control over program flow.
The technical nature of this flaw centers on improper handling of data within the codec implementation. When a user visits a maliciously crafted HTML page containing specially constructed multimedia elements, the browser attempts to decode the embedded media files. During this process, the application fails to adequately validate input boundaries or manage memory allocation correctly. This oversight leads to conditions such as buffer overflows, use-after-free scenarios, or heap corruption. By carefully crafting the payload within the HTML and associated media resources, a remote attacker can trigger these invalid memory operations. The exploitation likely involves writing data beyond allocated buffers or freeing memory that is still in active use, thereby corrupting adjacent memory structures like function pointers or object headers.
The operational impact of this vulnerability is severe because it enables arbitrary code execution with the privileges of the browser process. Although Chrome employs a multi-process architecture where renderer processes are sandboxed, successful exploitation can lead to escape from these restrictions depending on the specific nature of the corruption and the effectiveness of current mitigation techniques like DEP or ASLR. If an attacker achieves control over instruction pointers through heap spraying or other advanced memory manipulation techniques, they can execute arbitrary commands on the victim's machine. This could result in full system compromise, allowing for data theft, installation of malware, or use of the device as part of a botnet. The attack vector is remote and requires no user interaction beyond visiting the malicious webpage, making it highly dangerous in phishing campaigns or drive-by download attacks.
Mitigation strategies primarily involve updating to version 153.0.8010.36 or later, where this memory corruption issue has been addressed through improved input validation and safer memory management practices within the codec modules. Users should ensure automatic updates are enabled for their browsers to receive security patches promptly. From a defensive posture perspective, organizations should enforce strict content security policies to restrict inline scripts and untrusted media sources. Additionally, deploying endpoint detection and response solutions can help identify suspicious behavior patterns associated with browser exploitation attempts, such as unusual memory access patterns or process injection activities originating from the browser executable.
This vulnerability aligns with Common Weakness Enumeration categories related to improper input validation and boundary checks during resource management. Specifically, it reflects weaknesses where software does not properly control interaction with resources that are managed by another component, leading to corruption of those resources. In terms of attack tactics, this scenario maps to techniques involving exploitation for privilege escalation or defense evasion within the ATT&CK framework, particularly focusing on how attackers leverage application vulnerabilities to bypass security constraints and establish persistence or execute commands in restricted environments. Continuous monitoring and timely patching remain the most effective defenses against such remotely exploitable flaws in widely used software components.