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8.0
HIGH CVSS 3.1
CVE-2026-20432
Huawei Modem Out-of-Bounds Write Privilege Escalation Vulnerability
Overview
Description

In Modem, there is a possible out of bounds write due to a missing bounds check. This could lead to remote escalation of privilege, if a UE has connected to a rogue base station controlled by the attacker, with no additional execution privileges needed. User interaction is needed for exploitation. Patch ID: MOLY01406170; Issue ID: MSV-4461.

Details
INFO

Published Date :

April 7, 2026, 4:17 a.m.

Last Modified :

April 10, 2026, 7:57 p.m.

Remotely Exploit :

No

Source :

[email protected]
Impact
Affected Products

The following products are affected by CVE-2026-20432 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Mediatek mt2735
2 Mediatek mt6779
3 Mediatek mt6781
4 Mediatek mt6783
5 Mediatek mt6785
6 Mediatek mt6789
7 Mediatek mt6813
8 Mediatek mt6833
9 Mediatek mt6835
10 Mediatek mt6853
11 Mediatek mt6855
12 Mediatek mt6873
13 Mediatek mt6875
14 Mediatek mt6877
15 Mediatek mt6878
16 Mediatek mt6879
17 Mediatek mt6880
18 Mediatek mt6883
19 Mediatek mt6885
20 Mediatek mt6886
21 Mediatek mt6889
22 Mediatek mt6890
23 Mediatek mt6891
24 Mediatek mt6893
25 Mediatek mt6895
26 Mediatek mt6896
27 Mediatek mt6897
28 Mediatek mt6980
29 Mediatek mt6985
30 Mediatek mt6989
31 Mediatek mt6990
32 Mediatek mt8675
33 Mediatek mt8791
34 Mediatek mt8791t
35 Mediatek mt8797
36 Mediatek mt6983
37 Mediatek mt8673
38 Mediatek mt8781
39 Mediatek mt8789
40 Mediatek mt8798
41 Mediatek mt8676
42 Mediatek mt8678
43 Mediatek mt8755
44 Mediatek mt8775
45 Mediatek mt8792
46 Mediatek mt6815
47 Mediatek mt8893
48 Mediatek mt8771
49 Mediatek mt8795t
50 Mediatek mt2737
51 Mediatek mt6899
52 Mediatek mt6991
53 Mediatek mt8863
54 Mediatek mt2735_firmware
55 Mediatek mt2737_firmware
56 Mediatek mt6779_firmware
57 Mediatek mt6781_firmware
58 Mediatek mt6783_firmware
59 Mediatek mt6785_firmware
60 Mediatek mt6789_firmware
61 Mediatek mt6813_firmware
62 Mediatek mt6833_firmware
63 Mediatek mt6835_firmware
64 Mediatek mt6853_firmware
65 Mediatek mt6855_firmware
66 Mediatek mt6873_firmware
67 Mediatek mt6875_firmware
68 Mediatek mt6877_firmware
69 Mediatek mt6878_firmware
70 Mediatek mt6879_firmware
71 Mediatek mt6880_firmware
72 Mediatek mt6883_firmware
73 Mediatek mt6885_firmware
74 Mediatek mt6886_firmware
75 Mediatek mt6889_firmware
76 Mediatek mt6890_firmware
77 Mediatek mt6891_firmware
78 Mediatek mt6893_firmware
79 Mediatek mt6895_firmware
80 Mediatek mt6896_firmware
81 Mediatek mt6897_firmware
82 Mediatek mt6899_firmware
83 Mediatek mt6980_firmware
84 Mediatek mt6983_firmware
85 Mediatek mt6985_firmware
86 Mediatek mt6989_firmware
87 Mediatek mt6990_firmware
88 Mediatek mt6991_firmware
89 Mediatek mt8673_firmware
90 Mediatek mt8675_firmware
91 Mediatek mt8676_firmware
92 Mediatek mt8678_firmware
93 Mediatek mt8771_firmware
94 Mediatek mt8781_firmware
95 Mediatek mt8791t_firmware
96 Mediatek mt8797_firmware
97 Mediatek mt8798_firmware
98 Mediatek mt8863_firmware
99 Mediatek mt8873
100 Mediatek mt8883
101 Mediatek mt8793
102 Mediatek mt6993
103 Mediatek mt8668
104 Mediatek mt6815_firmware
105 Mediatek mt6993_firmware
106 Mediatek mt8668_firmware
107 Mediatek mt8755_firmware
108 Mediatek mt8775_firmware
109 Mediatek mt8792_firmware
110 Mediatek mt8793_firmware
111 Mediatek mt8873_firmware
112 Mediatek mt8883_firmware
113 Mediatek mt8789_firmware
114 Mediatek mt8791_firmware
115 Mediatek mt8795t_firmware
116 Mediatek mt8893_firmware
: Total Affected Vendor : 1 | Products : 116
Scoring
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 3.1 HIGH 134c704f-9b21-4f2e-91b3-4a467353bcc0
Solution
Apply vendor patches to fix out-of-bounds write vulnerabilities and prevent privilege escalation.
  • Apply vendor patches.
  • Update Modem firmware.
  • Ensure secure base station connections.
References
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2026-20432.

URL Resource
https://corp.mediatek.com/product-security-bulletin/April-2026 Vendor Advisory
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-20432 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-20432 weaknesses.

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2026-20432 vulnerability anywhere in the article.

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2026-20432 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • Initial Analysis by [email protected]

    Apr. 10, 2026

    Action Type Old Value New Value
    Added CPE Configuration AND OR *cpe:2.3:o:mediatek:mt2735_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mediatek:mt2735:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mediatek:mt2737_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mediatek:mt2737:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mediatek:mt6779_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mediatek:mt6779:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mediatek:mt6781_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mediatek:mt6781:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mediatek:mt6783_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mediatek:mt6783:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mediatek:mt8781_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mediatek:mt8781:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mediatek:mt8789_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mediatek:mt8789:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mediatek:mt8791_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mediatek:mt8791:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mediatek:mt8791t_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mediatek:mt8791t:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mediatek:mt8792_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mediatek:mt8792:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mediatek:mt8793_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mediatek:mt8793:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mediatek:mt8795t_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mediatek:mt8795t:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mediatek:mt8797_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mediatek:mt8797:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mediatek:mt8798_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mediatek:mt8798:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mediatek:mt8863_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mediatek:mt8863:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mediatek:mt8873_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mediatek:mt8873:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mediatek:mt8883_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mediatek:mt8883:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mediatek:mt8893_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mediatek:mt8893:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mediatek:mt6785_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mediatek:mt6785:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mediatek:mt6789_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mediatek:mt6789:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mediatek:mt6813_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mediatek:mt6813:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mediatek:mt6815_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mediatek:mt6815:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mediatek:mt6833_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mediatek:mt6833:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mediatek:mt6835_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mediatek:mt6835:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mediatek:mt6853_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mediatek:mt6853:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mediatek:mt6855_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mediatek:mt6855:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mediatek:mt6873_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mediatek:mt6873:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mediatek:mt6875_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mediatek:mt6875:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mediatek:mt6877_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mediatek:mt6877:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mediatek:mt6878_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mediatek:mt6878:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mediatek:mt6879_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mediatek:mt6879:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mediatek:mt6880_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mediatek:mt6880:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mediatek:mt6883_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mediatek:mt6883:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mediatek:mt6885_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mediatek:mt6885:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mediatek:mt6886_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mediatek:mt6886:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mediatek:mt6889_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mediatek:mt6889:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mediatek:mt6890_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mediatek:mt6890:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mediatek:mt6891_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mediatek:mt6891:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mediatek:mt6893_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mediatek:mt6893:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mediatek:mt6895_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mediatek:mt6895:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mediatek:mt6896_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mediatek:mt6896:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mediatek:mt6897_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mediatek:mt6897:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mediatek:mt6899_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mediatek:mt6899:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mediatek:mt6980_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mediatek:mt6980:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mediatek:mt6983_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mediatek:mt6983:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mediatek:mt6985_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mediatek:mt6985:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mediatek:mt6989_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mediatek:mt6989:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mediatek:mt6990_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mediatek:mt6990:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mediatek:mt6991_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mediatek:mt6991:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mediatek:mt6993_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mediatek:mt6993:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mediatek:mt8668_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mediatek:mt8668:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mediatek:mt8673_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mediatek:mt8673:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mediatek:mt8675_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mediatek:mt8675:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mediatek:mt8676_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mediatek:mt8676:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mediatek:mt8678_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mediatek:mt8678:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mediatek:mt8755_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mediatek:mt8755:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mediatek:mt8771_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mediatek:mt8771:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mediatek:mt8775_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mediatek:mt8775:-:*:*:*:*:*:*:*
    Added Reference Type MediaTek, Inc.: https://corp.mediatek.com/product-security-bulletin/April-2026 Types: Vendor Advisory
  • CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0

    Apr. 07, 2026

    Action Type Old Value New Value
    Added CVSS V3.1 AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
    Added CWE CWE-787
  • New CVE Received by [email protected]

    Apr. 07, 2026

    Action Type Old Value New Value
    Added Description In Modem, there is a possible out of bounds write due to a missing bounds check. This could lead to remote escalation of privilege, if a UE has connected to a rogue base station controlled by the attacker, with no additional execution privileges needed. User interaction is needed for exploitation. Patch ID: MOLY01406170; Issue ID: MSV-4461.
    Added CWE CWE-787
    Added Reference https://corp.mediatek.com/product-security-bulletin/April-2026
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CVSS
Vulnerability Scoring Details
Base CVSS Score: 8.0
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact