CVE-2026-4452: 
vulnerability analysis and mitigation

CVE-2026-4452 is an integer overflow vulnerability in the ANGLE (Almost Native Graphics Layer Engine) graphics library in Google Chrome on Windows. It allows a remote attacker to potentially exploit heap corruption via a crafted HTML page, requiring only user interaction (visiting a malicious page) with no privileges required. The vulnerability was reported by researcher "cinzinga" on 2026-02-26 and publicly disclosed on 2026-03-18 when Google released Chrome 146.0.7680.153. It carries a CVSS v3.1 base score of 8.8 (High) (Chrome Releases, Red Hat Bugzilla). Microsoft Edge (Chromium-based) is also affected (Microsoft MSRC).

The root cause is an integer overflow (CWE-190) in the ANGLE graphics library, which Chrome uses on Windows to translate OpenGL ES API calls to DirectX. When processing a specially crafted HTML page, an arithmetic operation on an integer value wraps around, producing an unexpectedly small value that can be used to under-allocate a heap buffer, leading to heap corruption. The vulnerability is tracked under Chromium issue 487977696 and is specific to Chrome on Windows due to ANGLE's role as a DirectX translation layer on that platform. No public proof-of-concept exploit code has been identified (Chrome Releases, Red Hat Bugzilla).

Successful exploitation could allow a remote attacker to corrupt heap memory within the Chrome browser process, potentially leading to arbitrary code execution with the privileges of the browser process. This could result in full compromise of confidentiality, integrity, and availability of data accessible to the browser, including session tokens, stored credentials, and locally accessible files. The attack requires only that a user visit a malicious webpage, making it suitable for drive-by exploitation scenarios (Chrome Releases, Red Hat Bugzilla).

As of the time of disclosure, there is no public proof-of-concept exploit and no evidence of in-the-wild exploitation (Red Hat Bugzilla). The EPSS score is approximately 0.035%, indicating a low current probability of exploitation in the wild. The vulnerability has not been added to the CISA Known Exploited Vulnerabilities (KEV) catalog. Detection signatures have been published by Nessus and Qualys scanners, and the vulnerability is part of a broader Chrome update that patched 26 security issues, three of which were rated Critical (Chrome Releases).

1. Reconnaissance: Identify targets running Google Chrome on Windows prior to version 146.0.7680.153 or Microsoft Edge (Chromium-based) at equivalent versions, using browser fingerprinting techniques on a controlled web server.
2. Craft malicious HTML page: Develop an HTML page containing WebGL or graphics-intensive JavaScript that triggers the ANGLE integer overflow by passing carefully sized or shaped geometry/texture data designed to cause an arithmetic wraparound in ANGLE's buffer size calculations.
3. Host and deliver: Host the malicious page on an attacker-controlled server and lure the target user to visit it via phishing email, malicious advertisement, or compromised website.
4. Trigger heap corruption: When the victim's browser renders the page, the integer overflow in ANGLE causes a heap buffer to be under-allocated, and subsequent writes overflow into adjacent heap memory.
5. Achieve code execution: Leverage the heap corruption to overwrite function pointers or other control-flow data structures, redirecting execution to attacker-controlled shellcode or a ROP chain, ultimately achieving code execution within the Chrome renderer or browser process (Chrome Releases).

• Network: Unusual outbound connections from the browser process (e.g., chrome.exe) to unknown external IP addresses or domains shortly after visiting an unfamiliar webpage; HTTP/HTTPS requests to newly registered or low-reputation domains serving complex WebGL content.
• Process: Unexpected child processes spawned by chrome.exe or msedge.exe (e.g., cmd.exe, powershell.exe, curl.exe); renderer process crashes or repeated restarts logged in Chrome's crash reporter.
• File System: Unexpected files written to the user's %TEMP%, %APPDATA%, or Chrome profile directories by the browser process; new scheduled tasks or startup entries created following browser activity.
• Logs: Windows Event Log entries showing process creation events (Event ID 4688) with chrome.exe or msedge.exe as the parent process for unexpected child processes; crash dump files (.dmp) generated in Chrome's user data directory.

Google has released a fix in Chrome version 146.0.7680.153 (Windows/Linux) and 146.0.7680.153/154 (Mac); users should update immediately via Chrome's built-in updater or by downloading from the official site (Chrome Releases). Microsoft Edge (Chromium-based) users should apply the corresponding Edge update via Microsoft Update (Microsoft MSRC). As a workaround, organizations can restrict access to untrusted or unknown websites using web filtering solutions and ensure Chrome's automatic update mechanism is enabled. Linux distributions including Debian, Fedora, and openSUSE have also released updated Chromium packages addressing this vulnerability.

The Chrome 146 update, which included this vulnerability among 26 security fixes, received broad coverage from security news outlets including GBHackers, CyberSecurityNews, and CyberPress, which highlighted the batch of high-severity issues and urged immediate user action (GBHackers, CyberSecurityNews). Red Hat and openSUSE security teams tracked the issue and issued advisories for their Chromium packages. Palo Alto Networks also published a security advisory (PAN-SA-2026-0007) referencing this CVE in the context of their products. Community reaction was generally focused on the breadth of the update rather than this specific CVE, as no active exploitation was observed.