MediaTek MT8797 CMAS Message assertion

CVSS Meta Temp Score
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CTI Interest Score
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6.8$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic has been found in MediaTek MT2731, MT2735, MT6297, MT6725, MT6739, MT6761, MT6762, MT6762D, MT6762M, MT6763, MT6765, MT6765T, MT6767, MT6768, MT6769, MT6769T, MT6769Z, MT6771, MT6779, MT6781, MT6783, MT6785, MT6785T, MT6789, MT6833, MT6853, MT6855, MT6873, MT6875, MT6877, MT6879, MT6880, MT6883, MT6885, MT6889, MT6890, MT6891, MT6893, MT6895, MT6983, MT8385, MT8666, MT8667, MT8675, MT8765, MT8766, MT8768, MT8786, MT8788, MT8789, MT8791 and MT8797. This vulnerability affects unknown code of the component CMAS Message Handler. This manipulation causes assertion. This vulnerability is registered as CVE-2022-26446. Remote exploitation of the attack is possible. No exploit is available. Applying a patch is the recommended action to fix this issue.

Detailsinfo

A vulnerability has been found in MediaTek MT2731, MT2735, MT6297, MT6725, MT6739, MT6761, MT6762, MT6762D, MT6762M, MT6763, MT6765, MT6765T, MT6767, MT6768, MT6769, MT6769T, MT6769Z, MT6771, MT6779, MT6781, MT6783, MT6785, MT6785T, MT6789, MT6833, MT6853, MT6855, MT6873, MT6875, MT6877, MT6879, MT6880, MT6883, MT6885, MT6889, MT6890, MT6891, MT6893, MT6895, MT6983, MT8385, MT8666, MT8667, MT8675, MT8765, MT8766, MT8768, MT8786, MT8788, MT8789, MT8791 and MT8797 (Chip Software) and classified as critical. Affected by this vulnerability is some unknown processing of the component CMAS Message Handler. The manipulation with an unknown input leads to a assertion vulnerability. The CWE definition for the vulnerability is CWE-617. The product contains an assert() or similar statement that can be triggered by an attacker, which leads to an application exit or other behavior that is more severe than necessary. As an impact it is known to affect availability. The summary by CVE is:

In Modem 4G RRC, there is a possible system crash due to improper input validation. This could lead to remote denial of service, when concatenating improper SIB12 (CMAS message), with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: MOLY00867883; Issue ID: ALPS07274118.

The weakness was published 11/09/2022 as MOLY00867883. The advisory is shared at corp.mediatek.com. This vulnerability is known as CVE-2022-26446 since 03/04/2022. Neither technical details nor an exploit are publicly available.

Applying the patch ALPS07274118 is able to eliminate this problem.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2022-31005). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

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Vendor

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License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.0
VulDB Meta Temp Score: 6.8

VulDB Base Score: 6.5
VulDB Temp Score: 6.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Assertion
CWE: CWE-617
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: ALPS07274118

Timelineinfo

03/04/2022 🔍
11/09/2022 +250 days 🔍
11/09/2022 +0 days 🔍
05/09/2026 +1277 days 🔍

Sourcesinfo

Advisory: MOLY00867883
Status: Confirmed

CVE: CVE-2022-26446 (🔍)
GCVE (CVE): GCVE-0-2022-26446
GCVE (VulDB): GCVE-100-213205
EUVD: 🔍

Entryinfo

Created: 11/09/2022 07:49
Updated: 05/09/2026 15:37
Changes: 11/09/2022 07:49 (41), 12/10/2022 16:28 (12), 05/02/2025 04:48 (15), 05/09/2026 15:37 (1)
Complete: 🔍
Cache ID: 216::103

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