In mOnDone of NotificationConversationInfo.java, there is a possible way to access app notification data of another user due to a logic error in the code. This could lead to local information disclosure with no additional execution privileges needed. User interaction is not needed for exploitation.
Conclusion & alert: CVE-2023-40098 is rated Low Risk (27.6/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.05%). Mandatory action: Monitor for updates and reassess as exploit intelligence or EPSS changes.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2025-11-21 | 0.01% | 0.05% | +0.04% |
| 2 | 2025-11-18 | 0.05% | 0.01% | -0.04% |
| 3 | 2025-04-15 | — | 0.05% | — |
Full EPSS history (5 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 5.5 | 3.1 | MEDIUM |
|
1.8 | 3.6 | [email protected] |
| URL | Tags |
|---|---|
| https://android.googlesource.com/platform/frameworks/base/+/d21ffbe8a2eeb2a5e6da7efbb1a0430ba6b022e0 | Mailing List Patch |
| https://source.android.com/security/bulletin/2023-12-01 | Patch Vendor Advisory |