CVE-2025-11210: 
vulnerability analysis and mitigation

CVE-2025-11210 is a side-channel information leakage vulnerability in the Tab component of Google Chrome that allows a remote attacker to perform UI spoofing via a crafted HTML page. The vulnerability was reported by Umar Farooq on 2025-08-22 and publicly disclosed on September 30, 2025, as part of the Chrome 141 stable channel release. It affects all versions of Google Chrome prior to 141.0.7390.54 on Windows, macOS, and Linux, as well as Microsoft Edge (Chromium-based). The CVSS v3.1 base score is 5.4 (Medium), as assessed by CISA-ADP (Chrome Release, Microsoft MSRC).

The vulnerability is classified under CWE-1300 (Improper Protection of Physical Side Channels), indicating that the Tab component in Chrome does not adequately prevent observable timing or behavioral differences that can be exploited to infer sensitive information. Exploitation requires user interaction — specifically, an attacker must convince a victim to engage in specific UI gestures while visiting a crafted HTML page, after which the attacker can leverage side-channel signals to perform UI spoofing. The attack is network-based and requires no authentication or elevated privileges. The Chromium issue tracker entry (issue #440523110) is access-restricted, limiting public technical detail (Chrome Release).

Successful exploitation allows a remote attacker to perform UI spoofing, potentially deceiving users into believing they are interacting with a trusted interface when they are not. The confidentiality and integrity impacts are both rated low — sensitive information may be partially leaked and limited unauthorized actions may be possible, but there is no availability impact. The primary risk is phishing-style attacks where spoofed UI elements mislead users into disclosing credentials or taking unintended actions (Chrome Release).

Google has addressed this vulnerability in Chrome 141.0.7390.54 (Linux) and 141.0.7390.54/55 (Windows and Mac), released on September 30, 2025. Users should update Google Chrome to version 141.0.7390.54 or later immediately via the browser's built-in update mechanism (Settings → Help → About Google Chrome). Microsoft Edge (Chromium-based) users should also apply the corresponding Edge update. No configuration-based workarounds have been published (Chrome Release, Microsoft MSRC).

The Chrome 141 update, which included CVE-2025-11210 among 21 security fixes, received coverage from security news outlets such as SecurityOnline and GBHackers, which highlighted the broader set of high and medium severity vulnerabilities patched in this release. The vulnerability itself, rated Medium severity, did not generate significant standalone commentary. Google awarded the reporter, Umar Farooq, a $3,000 bug bounty reward (Chrome Release).