MediaTek MT6789/MT6855/MT6879/MT6895/MT6983 gz memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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A vulnerability was found in MediaTek MT6789, MT6855, MT6879, MT6895 and MT6983 (Chip Software). It has been rated as critical. Affected by this issue is an unknown code block of the component gz. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. Impacted is confidentiality, integrity, and availability. CVE summarizes:

In gz, there is a possible memory corruption due to incorrect error handling. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation. Patch ID: ALPS07177858; Issue ID: ALPS07177858.

The weakness was disclosed 09/07/2022 as ALPS07177858. The advisory is shared for download at This vulnerability is handled as CVE-2022-26455 since 03/04/2022. There are neither technical details nor an exploit publicly available.

Applying the patch ALPS07177858 is able to eliminate this problem.

The entries VDB-208053, VDB-208054, VDB-208055 and VDB-208056 are pretty similar.






CPE 2.3info

CPE 2.2info


VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
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VulDB Meta Base Score: 5.4
VulDB Meta Temp Score: 5.3

VulDB Base Score: 4.2
VulDB Temp Score: 4.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.7
NVD Vector: 🔍



VulDB Base Score: 🔍
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Class: Memory corruption
CWE: CWE-119

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: ALPS07177858


03/04/2022 🔍
09/07/2022 +186 days 🔍
09/07/2022 +0 days 🔍
10/14/2022 +37 days 🔍


Advisory: ALPS07177858
Status: Confirmed

CVE: CVE-2022-26455 (🔍)
See also: 🔍


Created: 09/07/2022 09:20 PM
Updated: 10/14/2022 09:33 AM
Changes: 09/07/2022 09:20 PM (41), 10/14/2022 09:33 AM (11)
Complete: 🔍
Cache ID: 44:756:40


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