CVE-2026-3932
Published: 11 March 2026
Summary
CVE-2026-3932 is a high-severity Improper Access Control (CWE-284) vulnerability in Google Chrome. Its CVSS base score is 7.5 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Drive-by Compromise (T1189); ranked at the 7.9th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.
Threat & Defense at a Glance
Threat & Defense Details
Likely Mitigating ControlsAI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
The access control policy and procedures directly mandate and enforce proper access control mechanisms across the organization.
Device lock enforces restricted access until re-authentication, directly reducing unauthorized use of active sessions.
Supervision and review of access control activities directly detects and remediates improper access configurations or usages.
Explicitly identifying and documenting actions permitted without identification or authentication enforces proper access control boundaries by defining justified exceptions.
By automatically labeling outputs with security attributes, the control supports attribute-based enforcement and reduces exploitability of improper access control weaknesses.
Associating and retaining security attributes with data directly supports enforcement of access control decisions across storage, processing, and transmission.
Requiring prior authorization for each remote access type prevents improper access control over remote connections.
Requiring authorization of wireless access before allowing connections enforces proper access control for this access method.
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
CVE enables client-side exploitation via crafted HTML on malicious site visit (drive-by), bypassing PDF navigation controls in browser without further user interaction.
NVD Description
Insufficient policy enforcement in PDF in Google Chrome on Android prior to 146.0.7680.71 allowed a remote attacker to bypass navigation restrictions via a crafted HTML page. (Chromium security severity: Medium)
Deeper analysisAI
CVE-2026-3932 is an insufficient policy enforcement vulnerability in the PDF component of Google Chrome on Android versions prior to 146.0.7680.71. It enables a remote attacker to bypass navigation restrictions through a crafted HTML page. The issue carries a Chromium security severity rating of Medium and a CVSS v3.1 base score of 7.5 (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N), with associated CWEs including NVD-CWE-noinfo and CWE-284 (Improper Access Control).
A remote attacker can exploit this vulnerability without privileges or user interaction by tricking a victim into visiting a malicious site hosting the crafted HTML page. Successful exploitation allows the attacker to bypass navigation restrictions enforced by the PDF viewer, potentially enabling unauthorized redirects or access to restricted content within the browser context, resulting in high integrity impact.
Mitigation is addressed in the Chrome stable channel update, as detailed in the Google Chrome Releases blog post at https://chromereleases.googleblog.com/2026/03/stable-channel-update-for-desktop_10.html, which covers the patch up to version 146.0.7680.71. Additional technical details are available in the Chromium issue tracker at https://issues.chromium.org/issues/478296121. Security practitioners should ensure Android Chrome users update to version 146.0.7680.71 or later.
Details
- CWE(s)