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CVE-2026-20503

Vulnerability in Mediatek Mt2716 Firmware

CVSS score

5.3

EPSS probability

%0.2

Risk score

0.0

Published

1 mo ago

OverviewPublic Exploits (0)NewsroomVulnerability Timeline
Patch status has not yet been verified

Resmî kaynaklarda yeterli kanıt bulunamadı. Bu sonuç “yama yok” anlamına gelmez.

Impact on My Inventory

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Vulnerability description

DayBreach CVE AI Research

CVE-2026-20503 has vendor, distribution, patch and security-source records on file. We can compare them and prepare an explanation linked to the evidence.

In Modem, there is a possible system crash due to a missing bounds check. This could lead to remote denial of service, if a UE has connected to a rogue base station controlled by the attacker, with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: MOLY01371002; Issue ID: MSV-9020.

IMPACT: Affected Products and Software

Affected Products

The following products are affected by CVE-2026-20503 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.

IDVENDORPRODUCTACTION
1mediatekmt2716 firmware View
2mediatekmt2716 View
3mediatekmt2735 firmware View
4mediatekmt2735 View
5mediatekmt2737 firmware View
6mediatekmt2737 View
7mediatekmt6813 firmware View
8mediatekmt6813 View
9mediatekmt6833 firmware View
10mediatekmt6833 View
11mediatekmt6835 firmware View
12mediatekmt6835 View
13mediatekmt6853 firmware View
14mediatekmt6853 View
15mediatekmt6855 firmware View
16mediatekmt6855 View
17mediatekmt6858 firmware View
18mediatekmt6858 View
19mediatekmt6873 firmware View
20mediatekmt6873 View
21mediatekmt6875 firmware View
22mediatekmt6875 View
23mediatekmt6877 firmware View
24mediatekmt6877 View
25mediatekmt6878 firmware View
26mediatekmt6878 View
27mediatekmt6879 firmware View
28mediatekmt6879 View
29mediatekmt6880 firmware View
30mediatekmt6880 View
31mediatekmt6881 firmware View
32mediatekmt6881 View
33mediatekmt6883 firmware View
34mediatekmt6883 View
35mediatekmt6885 firmware View
36mediatekmt6885 View
37mediatekmt6886 firmware View
38mediatekmt6886 View
39mediatekmt6889 firmware View
40mediatekmt6889 View
41mediatekmt6890 firmware View
42mediatekmt6890 View
43mediatekmt6891 firmware View
44mediatekmt6891 View
45mediatekmt6893 firmware View
46mediatekmt6893 View
47mediatekmt6895 firmware View
48mediatekmt6895 View
49mediatekmt6896 firmware View
50mediatekmt6896 View
51mediatekmt6897 firmware View
52mediatekmt6897 View
53mediatekmt6899 firmware View
54mediatekmt6899 View
55mediatekmt6980 firmware View
56mediatekmt6980 View
57mediatekmt6982vb firmware View
58mediatekmt6982vb View
59mediatekmt6983 firmware View
60mediatekmt6983 View
61mediatekmt6985 firmware View
62mediatekmt6985 View
63mediatekmt6986 firmware View
64mediatekmt6986 View
65mediatekmt6988 firmware View
66mediatekmt6988 View
67mediatekmt6989 firmware View
68mediatekmt6989 View
69mediatekmt6990 firmware View
70mediatekmt6990 View
71mediatekmt6991 firmware View
72mediatekmt6991 View
73mediatekmt6993 firmware View
74mediatekmt6993 View
75mediatekmt8668 firmware View
76mediatekmt8668 View
77mediatekmt8673 firmware View
78mediatekmt8673 View
79mediatekmt8675 firmware View
80mediatekmt8675 View
81mediatekmt8676 firmware View
82mediatekmt8676 View
83mediatekmt8678 firmware View
84mediatekmt8678 View
85mediatekmt8755 firmware View
86mediatekmt8755 View
87mediatekmt8771 firmware View
88mediatekmt8771 View
89mediatekmt8775 firmware View
90mediatekmt8775 View
91mediatekmt8791 firmware View
92mediatekmt8791 View
93mediatekmt8791t firmware View
94mediatekmt8791t View
95mediatekmt8792 firmware View
96mediatekmt8792 View
97mediatekmt8793 firmware View
98mediatekmt8793 View
99mediatekmt8795t firmware View
100mediatekmt8795t View
101mediatekmt8796 firmware View
102mediatekmt8796 View
103mediatekmt8797 firmware View
104mediatekmt8797 View
105mediatekmt8798 firmware View
106mediatekmt8798 View
107mediatekmt8863 firmware View
108mediatekmt8863 View
109mediatekmt8873 firmware View
110mediatekmt8873 View
111mediatekmt8883 firmware View
112mediatekmt8883 View
113mediatekmt8893 firmware View
114mediatekmt8893 View
Total affected vendors: 1|Products: 114

RED HAT CSAF/VEX: Product Impact Check

Red Hat has not yet published a CSAF/VEX impact record for this CVE. This does not mean “not affected”.

SCORING: CVSS from Multiple Sources

CVSS Scores

The Common Vulnerability Scoring System is a standardised framework for assessing the severity of vulnerabilities in software and systems. We collect and display CVSS scores from several sources for each CVE.

SCOREVERSIONSEVERITYVECTORSOURCE
5.3CVSS V31MEDIUMCVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:HNVD

Patch and Remediation Guide

Solution & Remediation Advisory

Patch status unknown

İncelenen resmî kaynaklarda yama durumu doğrulanamadı. Bu sonuç “yama yok” anlamına gelmez.

Confirm the affected product and version against the source evidence above.
Restrict access to internet-facing services and apply network segmentation.
Until a patch is confirmed, follow the vendor advisory; do not read an unknown status as “no patch”.
Monitor server logs and network endpoints for signs of anomalous execution.

Public exploit and active exploitation status

Verified exploit intelligence

No verified public PoC, exploit repository or Metasploit module has been found for this CVE yet.

Weakness Classification and Attack Patterns (CWE & CAPEC)

CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorises the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-20503 is associated with the following CWEs:

CWE-617: Common Weakness Enumeration Entry CWE-617

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-2026-20503 weaknesses.

CAPEC-66: SQL InjectionCAPEC-126: Path TraversalCAPEC-28: OS Command Injection

Attack Vector and Accessibility

ExposureBitişik ağ
PermissionsGerekmiyor
UserGerekmiyor

Official Sources and Advisories

https://www.mediatek.com/product-security-bulletin/September-2026vendor-advisory

CVSS Vector Radar Chart

5.3 / 10
Attack VectorAdjacentComplexityHighPrivilegesNoneUser Interact.NoneConfidentialityHighIntegrityNoneAvailabilityHigh

Vulnerability Scoring Details

CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack VectorAdjacent network
Attack ComplexityHigh
Privileges RequiredNone required
User InteractionNone required
Confidentiality (Gizlilik)High
Integrity (Bütünlük)None
Availability (Erişilebilirlik)High

Yama durumu bilinmiyor

İncelenen resmî kaynaklarda yama durumu doğrulanamadı. Bu sonuç “yama yok” anlamına gelmez.

Follow the vendor

M
mediatek logo
mediatek

Weakness Type (CWE & CAPEC)

CWE-617

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