CVE-2018-20523

Exp

Xiaomi Stock Browser 10.2.4.g on Xiaomi Redmi Note 5 Pro devices and other Redmi Android phones allows content provider injection. In other words, a third-party application can read the user's cleartext browser history via an app.provider.query content://com.android.browser.searchhistory/searchhistory request.

Published: 2019-06-07 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2018-20523 is rated High Exploit Risk (73.6/100): CVSS Medium severity, with high exploitation likelihood (EPSS 10.01%, 95th percentile). 3 public exploit reference(s) are indexed (Exploit-DB). EPSS rose +4.14% over the last day, indicating growing attacker interest. Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2018-20523

EDB-ID Source Kind Published Link
50188 exploit_db edb 2021-08-10 Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2018-20523

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 2026-06-15 5.87% 10.01% +4.14%
2 2026-05-08 6.08% 5.87% -0.21%
3 2026-03-23 — 6.08% —

Full EPSS history (27 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2018-20523

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.3 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:L)
Some sensitive info could get out, but not a total data dump.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
 3.9 1.4 [email protected]
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/C:P/I:N/A:N Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:N)
No availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2018-20523

Affected software / configurations for CVE-2018-20523

Vendor Product Version Raw CPE
mi stock_browser 10.2.4g cpe:2.3:a:mi:stock_browser:10.2.4g:*:*:*:*:*:*:*
mi redmi_7_firmware — cpe:2.3:o:mi:redmi_7_firmware:-:*:*:*:*:*:*:*
mi redmi_note_7_firmware — cpe:2.3:o:mi:redmi_note_7_firmware:-:*:*:*:*:*:*:*
mi redmi_note_6_pro_firmware — cpe:2.3:o:mi:redmi_note_6_pro_firmware:-:*:*:*:*:*:*:*
mi redmi_6_firmware — cpe:2.3:o:mi:redmi_6_firmware:-:*:*:*:*:*:*:*
mi redmi_6a_firmware — cpe:2.3:o:mi:redmi_6a_firmware:-:*:*:*:*:*:*:*
mi redmi_s2_firmware — cpe:2.3:o:mi:redmi_s2_firmware:-:*:*:*:*:*:*:*
mi redmi_note_5_pro_firmware — cpe:2.3:o:mi:redmi_note_5_pro_firmware:-:*:*:*:*:*:*:*
mi redmi_k20_pro_firmware — cpe:2.3:o:mi:redmi_k20_pro_firmware:-:*:*:*:*:*:*:*
mi redmi_k20_firmware — cpe:2.3:o:mi:redmi_k20_firmware:-:*:*:*:*:*:*:*
mi redmi_7a_firmware — cpe:2.3:o:mi:redmi_7a_firmware:-:*:*:*:*:*:*:*
mi redmi_go_firmware — cpe:2.3:o:mi:redmi_go_firmware:-:*:*:*:*:*:*:*
mi redmi_note_5_firmware — cpe:2.3:o:mi:redmi_note_5_firmware:-:*:*:*:*:*:*:*
mi redmi_y3_firmware — cpe:2.3:o:mi:redmi_y3_firmware:-:*:*:*:*:*:*:*
mi redmi_note_7s_firmware — cpe:2.3:o:mi:redmi_note_7s_firmware:-:*:*:*:*:*:*:*
mi redmi_4a_firmware — cpe:2.3:o:mi:redmi_4a_firmware:-:*:*:*:*:*:*:*
mi redmi_note_4_firmware — cpe:2.3:o:mi:redmi_note_4_firmware:-:*:*:*:*:*:*:*
mi redmi_5_plus_firmware — cpe:2.3:o:mi:redmi_5_plus_firmware:-:*:*:*:*:*:*:*
mi redmi_note_5a_prime_firmware — cpe:2.3:o:mi:redmi_note_5a_prime_firmware:-:*:*:*:*:*:*:*

References for CVE-2018-20523

cvelogic Threat Intelligence