CVE-2026-0183: CPM Information Disclosure Vulnerability

CVE-2026-0183 Overview

CVE-2026-0183 is an information disclosure vulnerability in the Certificate/Credential Policy Manager (CPM) component addressed in the Android Security Bulletin for September 2026. The flaw stems from a confused deputy condition, tracked as [CWE-441], where a privileged process acts on behalf of a less-privileged caller without correctly validating the request context. Successful exploitation allows a local attacker with System execution privileges to read information that should remain isolated. User interaction is not required to trigger the flaw. The issue is local in scope and does not affect the integrity or availability of the target device.

Critical Impact
Local information disclosure by a caller already holding System privileges, enabling access to data the component was intended to protect.

Affected Products

Android platform CPM component as referenced in the September 2026 Pixel security bulletin
Devices receiving the 2026-09-01 Android security patch level
Refer to the Android Security Bulletin September 2026 for the authoritative device and version list

Discovery Timeline

2026-09-15 - CVE-2026-0183 published to NVD
2026-09-16 - Last updated in NVD database

Technical Details for CVE-2026-0183

Vulnerability Analysis

The vulnerability resides in CPM, a privileged Android component. A confused deputy weakness allows a caller to induce the component into performing an authorized action that discloses data outside the caller's intended scope. The attack is entirely local and does not affect data integrity or service availability. Because exploitation requires System-level execution, the flaw is most relevant as a post-compromise primitive that expands an attacker's visibility into protected information. The absence of a user interaction requirement means the disclosure can occur silently as part of a larger exploit chain.

Root Cause

The root cause is improper enforcement of trust boundaries within CPM, classified under [CWE-441] (Unintended Proxy or Intermediary, also known as Confused Deputy). The component uses its own privileges to satisfy a caller request without verifying that the requester should have access to the resulting information. This delegation gap allows the privileged intermediary to leak data across the boundary it was designed to protect.

Attack Vector

Exploitation requires local access with System execution privileges on the affected Android device. An attacker with an existing System-context foothold issues a crafted request to CPM. CPM then performs a lookup or operation and returns data that the caller should not directly obtain. No user interaction, network path, or additional privilege escalation is required from that point. Full technical details are restricted; see the Android Security Bulletin September 2026 for vendor guidance.

Detection Methods for CVE-2026-0183

Indicators of Compromise

No public indicators of compromise have been published for CVE-2026-0183 at the time of writing.
Unexpected System-context processes issuing repeated queries to CPM interfaces should be treated as suspicious.
Newly installed or sideloaded system-level applications on devices missing the 2026-09-01 patch level warrant review.

Detection Strategies

Verify device Android security patch level and flag any endpoint below 2026-09-01 as exposed.
Correlate mobile device management telemetry with process execution data to identify System-privileged callers interacting with CPM.
Monitor for privilege escalation chains that could grant an attacker the System context required to reach this flaw.

Monitoring Recommendations

Ingest mobile OS patch-level attestation into your security data lake and alert on drift from the September 2026 baseline.
Track anomalous access patterns to credential and certificate policy interfaces on managed Android devices.
Review logs from enterprise mobility management tools for indicators of rooted or otherwise elevated devices.

How to Mitigate CVE-2026-0183

Immediate Actions Required

Apply the September 2026 Android security update (patch level 2026-09-01 or later) on all affected devices.
Enforce a minimum patch level policy through your mobile device management platform and block non-compliant devices from sensitive resources.
Audit devices for unauthorized System-privileged applications that could serve as a launch point for exploitation.

Patch Information

Google addressed CVE-2026-0183 in the September 2026 Pixel security bulletin. Device vendors distribute the fix as part of the 2026-09-01 security patch level. Consult the Android Security Bulletin September 2026 for the list of updated components and device-specific rollout information.

Workarounds

No vendor-supplied workaround is documented; patching remains the only supported remediation.
Restrict installation of applications that require System-level privileges on managed fleets.
Retire or isolate end-of-life devices that will not receive the September 2026 security update.

bash

# Verify Android security patch level on a connected device
adb shell getprop ro.build.version.security_patch
# Expected output: 2026-09-01 or later