6.8
MEDIUM CVSS 3.1
CVE-2026-20544
Meta Out-of-Bounds Write Vulnerability
Description

In meta, there is a possible out of bounds write due to a missing bounds check. This could lead to local escalation of privilege, if an attacker has physical access to the device, with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: ALPS11049530 / ALPS11480843; Issue ID: MSV-7935.

INFO

Published Date :

Oct. 5, 2026, 2:16 a.m.

Last Modified :

Oct. 9, 2026, 5:34 p.m.

Remotely Exploit :

No
Affected Products

The following products are affected by CVE-2026-20544 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 mt8788_firmware
2 Mediatek mt6781
3 Mediatek mt6789
4 Mediatek mt6835
5 Mediatek mt6853
6 Mediatek mt6855
7 Mediatek mt6877
8 Mediatek mt6878
9 Mediatek mt6879
10 Mediatek mt6883
11 Mediatek mt6885
12 Mediatek mt6886
13 Mediatek mt6889
14 Mediatek mt6893
15 Mediatek mt6895
16 Mediatek mt6897
17 Mediatek mt6985
18 Mediatek mt6989
19 Mediatek mt8791
20 Mediatek mt6739
21 Mediatek mt6761
22 Mediatek mt6765
23 Mediatek mt6768
24 Mediatek mt6769
25 Mediatek mt6983
26 Mediatek mt8766
27 Mediatek mt8768
28 Mediatek mt8781
29 Mediatek mt8786
30 Mediatek mt8788
31 Mediatek mt8798
32 Mediatek mt8188
33 Mediatek mt8195
34 Mediatek mt8390
35 Mediatek mt8676
36 Mediatek mt8678
37 Mediatek mt8755
38 Mediatek mt8775
39 Mediatek mt8792
40 Mediatek mt8893
41 Mediatek mt6899
42 Mediatek mt6991
43 Mediatek mt8863
44 Mediatek mt8370
45 Mediatek mt8196
46 Mediatek mt6739_firmware
47 Mediatek mt6761_firmware
48 Mediatek mt6765_firmware
49 Mediatek mt6768_firmware
50 Mediatek mt6769_firmware
51 Mediatek mt6781_firmware
52 Mediatek mt6789_firmware
53 Mediatek mt6835_firmware
54 Mediatek mt6853_firmware
55 Mediatek mt6855_firmware
56 Mediatek mt6877_firmware
57 Mediatek mt6878_firmware
58 Mediatek mt6879_firmware
59 Mediatek mt6883_firmware
60 Mediatek mt6885_firmware
61 Mediatek mt6886_firmware
62 Mediatek mt6889_firmware
63 Mediatek mt6893_firmware
64 Mediatek mt6895_firmware
65 Mediatek mt6897_firmware
66 Mediatek mt6899_firmware
67 Mediatek mt6983_firmware
68 Mediatek mt6985_firmware
69 Mediatek mt6989_firmware
70 Mediatek mt6991_firmware
71 Mediatek mt8676_firmware
72 Mediatek mt8678_firmware
73 Mediatek mt8766_firmware
74 Mediatek mt8768_firmware
75 Mediatek mt8781_firmware
76 Mediatek mt8786_firmware
77 Mediatek mt8798_firmware
78 Mediatek mt8863_firmware
79 Mediatek mt8391
80 Mediatek mt8873
81 Mediatek mt8883
82 Mediatek mt8793
83 Mediatek mt6993
84 Mediatek mt8367
85 Mediatek mt8668
86 Mediatek mt8910
87 Mediatek mt6858
88 Mediatek mt6881
89 Mediatek mt6993_firmware
90 Mediatek mt8668_firmware
91 Mediatek mt8755_firmware
92 Mediatek mt8775_firmware
93 Mediatek mt8792_firmware
94 Mediatek mt8793_firmware
95 Mediatek mt8873_firmware
96 Mediatek mt8883_firmware
97 Mediatek mt8791_firmware
98 Mediatek mt8893_firmware
99 Mediatek mt8196_firmware
100 Mediatek mt8367_firmware
101 Mediatek mt8910_firmware
102 Mediatek mt6858_firmware
103 Mediatek mt8188_firmware
104 Mediatek mt8370_firmware
105 Mediatek mt8390_firmware
106 Mediatek mt8391_firmware
107 Mediatek mt8126_firmware
108 Mediatek mt8126
109 Mediatek mt8171_firmware
110 Mediatek mt8171
111 Mediatek mt8189_firmware
112 Mediatek mt8189
113 Mediatek mt8799_firmware
114 Mediatek mt8799
115 Mediatek mt6881_firmware
116 Mediatek mt8195_firmware
117 Mediatek mt8875_firmware
118 Mediatek mt8875
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 134c704f-9b21-4f2e-91b3-4a467353bcc0
CVSS 3.1 MEDIUM 134c704f-9b21-4f2e-91b3-4a467353bcc0
Solution
Address out-of-bounds write by applying available patches.
  • Apply patches ALPS11049530 and ALPS11480843.
  • Validate patch implementation.
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-2026-20544.

URL Resource
https://www.mediatek.com/product-security-bulletin/October-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-2026-20544 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-2026-20544 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-2026-20544 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2026-20544 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]

    Oct. 09, 2026

    Action Type Old Value New Value
    Added CPE Configuration AND OR *cpe:2.3:o:mediatek:mt8910_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mediatek:mt8910:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mediatek:mt6739_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mediatek:mt6739:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mediatek:mt6761_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mediatek:mt6761:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mediatek:mt6765_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mediatek:mt6765:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mediatek:mt6768_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mediatek:mt6768:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mediatek:mt6769_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mediatek:mt6769:-:*:*:*:*:*:*:*
    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:mt6789_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mediatek:mt6789:-:*:*:*:*:*:*:*
    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:mt6858_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mediatek:mt6858:-:*:*:*:*:*:*:*
    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:mt6881_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mediatek:mt6881:-:*:*:*:*:*:*:*
    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: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: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: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: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:mt8126_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mediatek:mt8126:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mediatek:mt8171_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mediatek:mt8171:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mediatek:mt8188_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mediatek:mt8188:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mediatek:mt8189_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mediatek:mt8189:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mediatek:mt8195_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mediatek:mt8195:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mediatek:mt8196_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mediatek:mt8196:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mediatek:mt8367_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mediatek:mt8367:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mediatek:mt8370_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mediatek:mt8370:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mediatek:mt8390_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mediatek:mt8390:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mediatek:mt8391_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mediatek:mt8391:-:*:*:*:*:*:*:*
    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: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:mt8766_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mediatek:mt8766:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mediatek:mt8768_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mediatek:mt8768:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mediatek:mt8775_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mediatek:mt8775:-:*:*:*:*:*:*:*
    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:mt8786_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mediatek:mt8786:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mediatek:mt8788_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mediatek:mt8788:-:*:*:*:*:*:*:*
    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: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:mt8798_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mediatek:mt8798:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:mediatek:mt8799_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mediatek:mt8799:-:*:*:*:*:*:*:*
    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:mt8875_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:mediatek:mt8875:-:*:*:*:*:*:*:*
    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 Reference Type MediaTek, Inc.: https://www.mediatek.com/product-security-bulletin/October-2026 Types: Vendor Advisory
  • CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0

    Oct. 05, 2026

    Action Type Old Value New Value
    Added CVSS V3.1 AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    Added SSVC {'id': 'CVE-2026-20544', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'total'}], 'version': '2.0.3', 'timestamp': '2026-10-05T10:37:54.902037Z'}
  • New CVE Received by [email protected]

    Oct. 05, 2026

    Action Type Old Value New Value
    Added Description In meta, there is a possible out of bounds write due to a missing bounds check. This could lead to local escalation of privilege, if an attacker has physical access to the device, with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: ALPS11049530 / ALPS11480843; Issue ID: MSV-7935.
    Added CWE CWE-787
    Added Affected New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/20xxx/CVE-2026-20544.json">CVE-2026-20544</a>
    Added Reference https://www.mediatek.com/product-security-bulletin/October-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.