CVE-2026-110920: 
Google Chrome vulnerability analysis and mitigation

CVE-2026-110920 is a memory corruption vulnerability in the V8 JavaScript engine of Google Chrome that allows a remote attacker to execute arbitrary code inside the Chrome sandbox via a crafted HTML page. It affects all Google Chrome versions prior to 155.0.8059.84 on Windows, Mac, and Linux. The vulnerability was reported by Xinyang Ge on October 5, 2026, and patched on October 15, 2026, as part of a 10-fix stable channel update. It carries a CVSS v3.1 base score of 8.8 (High) (Chrome Releases, GitHub Advisory).

The vulnerability is classified as CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer), meaning the V8 engine performs read or write operations outside the intended boundaries of a memory buffer during JavaScript execution. Exploitation requires no privileges and no special configuration — an attacker simply needs to lure a victim into visiting a malicious HTML page, at which point the crafted page triggers the memory corruption in V8. The attack vector is network-based with low complexity, though user interaction (visiting the page) is required. The Chromium issue tracker entry is referenced as bug #569659194, though full details remain restricted pending broad user uptake of the patch (Chrome Releases, GitHub Advisory).

Successful exploitation allows a remote attacker to execute arbitrary code within the Chrome sandbox, with high impact to confidentiality, integrity, and availability of the affected browser process. While execution is constrained to the sandbox, this class of vulnerability is frequently chained with a sandbox escape to achieve full system compromise. All users running Chrome versions prior to 155.0.8059.84 across Windows, Mac, and Linux are at risk (Chrome Releases, GitHub Advisory).

As of the time of disclosure, there is no public proof-of-concept exploit and no evidence of in-the-wild exploitation (Feedly). The EPSS score is reported as 0.0, reflecting low current exploitation probability. The vulnerability is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog. No threat actor attribution has been reported.

1. Reconnaissance: Identify targets running Google Chrome versions prior to 155.0.8059.84 using browser fingerprinting techniques or by targeting broad user populations likely to be on unpatched versions.
2. Craft malicious HTML page: Develop a specially crafted HTML/JavaScript page that triggers the memory corruption condition in Chrome's V8 JavaScript engine (bug #569659194), exploiting the out-of-bounds memory operation.
3. Deliver the payload: Host the malicious page on an attacker-controlled server and deliver the URL to the victim via phishing email, malicious advertisement, or compromised website.
4. Trigger exploitation: When the victim visits the page using a vulnerable Chrome version, the crafted JavaScript causes memory corruption in V8, enabling arbitrary code execution within the Chrome sandbox.
5. Post-exploitation (sandbox context): Execute attacker-controlled code within the Chrome renderer sandbox; optionally chain with a separate sandbox escape vulnerability to achieve full system-level code execution (Chrome Releases).

Google has released Chrome version 155.0.8059.84 (Linux) and 155.0.8059.84/.85 (Windows/Mac) which addresses this vulnerability. Users should update Chrome immediately by navigating to chrome://settings/help or enabling automatic updates. Enterprise administrators should prioritize deploying the update via policy management tools. No configuration-based workaround is available; patching is the only remediation (Chrome Releases).