MediaTek MT8797 ims Service improper synchronization

CVSS Meta Temp Score
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CTI Interest Score
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A vulnerability was found in MediaTek MT6761, MT6762, MT6763, MT6768, MT6769, MT6771, MT6779, MT6781, MT6785, MT6789, MT6833, MT6835, MT6853, MT6853T, MT6855, MT6873, MT6875, MT6877, MT6879, MT6883, MT6885, MT6886, MT6889, MT6891, MT6893, MT6895, MT6983, MT6985, MT8673, MT8791T and MT8797 (Chip Software). It has been rated as problematic. This issue affects an unknown part of the component ims Service. The manipulation with an unknown input leads to a improper synchronization vulnerability. Using CWE to declare the problem leads to CWE-662. The product utilizes multiple threads or processes to allow temporary access to a shared resource that can only be exclusive to one process at a time, but it does not properly synchronize these actions, which might cause simultaneous accesses of this resource by multiple threads or processes. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

In ims service, there is a possible memory corruption due to a race condition. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation. Patch ID: ALPS07937105; Issue ID: ALPS07937105.

The weakness was released 09/04/2023 as ALPS07937105. The advisory is shared at The identification of this vulnerability is CVE-2023-20827 since 10/28/2022. Neither technical details nor an exploit are publicly available.

Applying the patch ALPS07937105 is able to eliminate this problem.






CPE 2.3info

CPE 2.2info


VulDB Meta Base Score: 5.1
VulDB Meta Temp Score: 5.1

VulDB Base Score: 3.9
VulDB Temp Score: 3.8
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 6.4
NVD Vector: 🔒



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


Class: Improper synchronization
CWE: CWE-662
ATT&CK: Unknown

Local: Yes
Remote: No

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒


Threat Intelligenceinfo

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


Recommended: Patch
Status: 🔍

0-Day Time: 🔒

Patch: ALPS07937105


10/28/2022 CVE reserved
09/04/2023 +311 days Advisory disclosed
09/04/2023 +0 days VulDB entry created
09/30/2023 +26 days VulDB entry last update


Advisory: ALPS07937105
Status: Confirmed

CVE: CVE-2023-20827 (🔒)


Created: 09/04/2023 07:11 AM
Updated: 09/30/2023 07:52 AM
Changes: 09/04/2023 07:11 AM (40), 09/30/2023 07:52 AM (11)
Complete: 🔍


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