EUVD-2026-73954
GHSA-m9pr-m49j-cr9m
Severity by source
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Local attack via installed app (AV:L), standard user privileges (PR:L), no user interaction; C/I/A:H reflects full payment app takeover enabling credential theft and transaction fraud.
Primary rating from Vendor (android).
CVSS VectorVendor: android
Lifecycle Timeline
6DescriptionCVE.org
In onCreate of PaymentDefaultDialog.java, there is a possible way to change default payment app due to a confused deputy. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.
AnalysisAI
Local privilege escalation in Android's PaymentDefaultDialog allows an attacker with standard app-level execution to silently replace the device's default NFC payment application via a confused deputy in the component's onCreate method. Affecting Android 15, 16, 16-qpr2, and 17, the flaw is patched in the September 2026 Android Security Bulletin. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The attacker must have a malicious application installed and executing on the target device with at least standard user-level privileges (PR:L per CVSS); root or elevated system access is not required. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 7.8 High vector (AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H) accurately captures the key constraints: the attack is local-only, requiring the adversary to already have a malicious application executing on the device at standard user privilege. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Apply the patch distributed via the Android Security Bulletin 2026-09-01 (https://source.android.com/docs/security/bulletin/2026/2026-09-01); device users should verify their security patch level reads 2026-09-01 or later. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours: identify all Android devices running versions 15, 16, 16-qpr2, or 17 in your environment. …
Sign in for detailed remediation steps and compensating controls.
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External POC / Exploit Code
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