Huawei P20 prior out-of-bounds write

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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A vulnerability was found in Huawei P20 (Smartphone Operating System). It has been classified as critical. Affected is some unknown functionality. The manipulation with an unknown input leads to a out-of-bounds write vulnerability. CWE is classifying the issue as CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

There is an out-of-bounds write vulnerability on Huawei P20 smartphones with versions before The software does not handle the response message properly when the user doing certain inquiry operation, an attacker could send crafted message to the device, successful exploit could cause a denial of service condition.

The bug was discovered 11/28/2018. The weakness was published 12/04/2018 (Website). The advisory is shared for download at This vulnerability is traded as CVE-2018-7987 since 03/09/2018. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are neither technical details nor an exploit publicly available.

The vulnerability was handled as a non-public zero-day exploit for at least 6 days. During that time the estimated underground price was around $5k-$25k.

Upgrading to version eliminates this vulnerability.






CPE 2.3info

CPE 2.2info


VulDB Meta Base Score: 5.7
VulDB Meta Temp Score: 5.6

VulDB Base Score: 5.6
VulDB Temp Score: 5.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.9
NVD Vector: 🔍



VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍


Class: Out-of-bounds write
CWE: CWE-787 / CWE-119
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍


Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍


Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: P20


03/09/2018 🔍
11/28/2018 +264 days 🔍
12/04/2018 +6 days 🔍
12/04/2018 +0 days 🔍
12/05/2018 +1 days 🔍
06/13/2023 +1651 days 🔍



Advisory: sa-20181128-02
Status: Not defined
Confirmation: 🔍

CVE: CVE-2018-7987 (🔍)


Created: 12/05/2018 08:28 AM
Updated: 06/13/2023 08:24 AM
Changes: 12/05/2018 08:28 AM (58), 04/17/2020 03:16 PM (2), 06/13/2023 08:24 AM (4)
Complete: 🔍


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