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Android CVE-2026-28631

| EUVDEUVD-2026-73975 HIGH
URL Redirection to Untrusted Site (Open Redirect) (CWE-601)
2026-09-08 security@android.com GHSA-c33q-xxp2-hq7x
7.8
CVSS 3.1 · Vendor: android
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Severity by source

Vendor (android) PRIMARY
7.8 HIGH
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
vuln.today AI
7.8 HIGH

AV:L and PR:L because exploitation requires a locally installed app; UI:N per vendor statement; full C/I/A reflects cross-profile privilege escalation with no scope change.

3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
4.0 AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Primary rating from Vendor (android).

CVSS VectorVendor: android

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

7
Metadata Corrected
Sep 10, 2026 - 15:40 vuln.today
tag: Android added
Metadata Corrected
Sep 10, 2026 - 15:40 vuln.today
tag: Google added
Metadata Corrected
Sep 10, 2026 - 15:40 vuln.today
tag: Open Redirect removed
Analysis Generated
Sep 10, 2026 - 15:24 vuln.today
CVSS changed
Sep 10, 2026 - 15:22 NVD
7.8 (HIGH)
CVE Published
Sep 08, 2026 - 19:17 cve.org
UNKNOWN (no severity yet)
CVE Published
Sep 08, 2026 - 19:17 cve.org
HIGH 7.8

DescriptionCVE.org

In buildMiniResolver of IntentForwarderActivity.java, there is a possible consent bypass due to a tapjacking/overlay attack. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.

AnalysisAI

Privilege escalation in Android's cross-profile intent-forwarding mechanism (IntentForwarderActivity.java) allows a locally installed low-privilege application to bypass the user consent dialog presented by buildMiniResolver via a tapjacking or overlay attack, achieving full confidentiality, integrity, and availability impact across Android 14 through 17 including the QPR2 train. The vendor explicitly states no user interaction is required, indicating the consent bypass is mechanically triggered against the framework rather than requiring the victim to tap attacker-crafted UI. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
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Delivery
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Exploit
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Execution
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Persist
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Impact
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Vulnerability AssessmentAI

Exploitation Exploitation requires a malicious application to be locally installed on the target Android device with at least low-level permissions (AV:L/PR:L per CVSS). … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 3.1 score of 7.8 (AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H) establishes a local attack surface requiring only a low-privilege installed application, but with full C/I/A impact once exploited. … 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 September 2026 Android Security Bulletin patches (security patch level 2026-09-01 or later). … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

Within 24 hours, identify all Android 14-17 devices in your organization and communicate the vulnerability to users with guidance to install applications only from Google Play Store. …

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Threat intelligence, references, and detailed analysis are available after sign-in.

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CVE-2026-28631 vulnerability details – vuln.today

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