CVE-2026-79052 Overview
CVE-2026-79052 is a use-after-free vulnerability in the Aura component of Google Chrome. Aura is Chromium's cross-platform window and UI framework responsible for rendering browser windows, widgets, and event routing. A remote attacker can trigger the flaw by convincing a user to load a crafted HTML page. Successful exploitation allows arbitrary code execution outside the Chrome sandbox. Google has rated the Chromium security severity as Critical and patched the issue in Chrome 152.0.7977.65 on the Stable channel.
Critical Impact
Remote attackers can escape the Chrome renderer sandbox and execute arbitrary code on the host with the privileges of the browser process.
Affected Products
- Google Chrome Desktop prior to 152.0.7977.65 (Windows, macOS, Linux)
- Chromium-based browsers integrating vulnerable Aura builds prior to the fix
- Downstream products embedding affected Chromium versions
Discovery Timeline
- 2026-08-25 - CVE-2026-79052 published to NVD
- 2026-08-27 - Last updated in NVD database
Technical Details for CVE-2026-79052
Vulnerability Analysis
The flaw is a use-after-free ([CWE-416]) in Aura, the Chromium framework that manages top-level windows, event dispatch, and compositor surfaces. Aura maintains references to aura::Window objects and associated widget hierarchies whose lifetimes are governed by observer patterns and reference counting. When an object is freed while another Aura component still holds a raw pointer to it, subsequent access dereferences a dangling pointer.
An attacker who reclaims the freed allocation with controlled data can steer virtual dispatch or callback pointers to attacker-chosen code. Because Aura runs in the privileged browser process rather than the sandboxed renderer, successful exploitation results in code execution outside the sandbox. User interaction is required: the target must load a malicious HTML page.
Root Cause
The root cause is improper object lifetime management within Aura. A code path frees a UI object while another path retains and later uses a pointer to it. Chromium's own severity rating of Critical indicates the freed object is reachable from JavaScript-driven UI operations and yields sandbox escape. Full technical details are restricted; see Chromium Issue Tracker #517518019.
Attack Vector
Exploitation is network-based and requires a victim to visit a crafted page. The attacker delivers HTML and JavaScript that manipulate window, menu, drag-and-drop, or focus operations to trigger the vulnerable free-then-reuse sequence in Aura. Heap grooming and type confusion primitives then convert the dangling pointer into arbitrary read, write, or control-flow hijack. Because the vulnerable code lives in the browser process, no separate sandbox escape chain is required.
No public proof-of-concept, exploit code, or in-the-wild exploitation has been reported at the time of publication.
Detection Methods for CVE-2026-79052
Indicators of Compromise
- Unexpected child processes spawned by chrome.exe or the Chrome browser process, such as command shells or scripting hosts
- Chrome browser-process crashes with access-violation signatures referencing Aura, views::, or aura::Window frames
- Outbound connections from Chrome to newly observed domains immediately following navigation to untrusted content
Detection Strategies
- Inventory Chrome installations and flag any version below 152.0.7977.65 across managed endpoints
- Alert on process-lineage anomalies where the Chrome browser process launches non-standard children outside the normal renderer, GPU, and utility set
- Correlate browser crash telemetry with subsequent process creation or persistence events on the same host
Monitoring Recommendations
- Ingest browser version and crash telemetry into your SIEM or data lake for continuous version drift detection
- Monitor DNS and proxy logs for user navigation to newly registered or low-reputation domains hosting HTML payloads
- Track EDR file and registry writes originating from the Chrome browser process, which should be minimal on a healthy host
How to Mitigate CVE-2026-79052
Immediate Actions Required
- Update Google Chrome to 152.0.7977.65 or later on all Windows, macOS, and Linux endpoints
- Force a browser restart through management tooling to ensure the patched binary is loaded into memory
- Patch Chromium-based browsers and embedded WebViews once their vendors ship builds incorporating the Aura fix
Patch Information
Google released the fix in the Stable channel update announced in the Google Chrome Desktop Update. Upgrading to Chrome 152.0.7977.65 or later remediates CVE-2026-79052. Enterprise administrators should validate deployment via Chrome Browser Cloud Management or equivalent policy tooling.
Workarounds
- Restrict browsing to trusted sites through URL filtering or a secure web gateway until patching completes
- Enforce Chrome auto-update policies and remove user ability to defer or disable updates
- Apply application allowlisting to block child processes spawned by the Chrome browser process outside an approved list
# Verify installed Chrome version on Windows endpoints
reg query "HKLM\SOFTWARE\Google\Chrome\BLBeacon" /v version
# Verify installed Chrome version on Linux
google-chrome --version
# Verify installed Chrome version on macOS
/Applications/Google\ Chrome.app/Contents/MacOS/Google\ Chrome --version
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
