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CVE-2026-20552

Out-of-bounds write in MediaTek, Inc. MediaTek Chipset

CVSS score

—

EPSS probability

—

Risk score

—

Published

3 h ago

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

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Vulnerability description

DayBreach AI Explanation

Verified against sources

Out-of-Bounds Write in MediaTek Chipset (CVE-2026-20552)

Sources read

2

Source agreement

Tam uyum

Evidence confidence

%61

Short explanation

CVE-2026-20552 is an out-of-bounds write flaw in the MediaTek chipset ccci component caused by a missing bounds check. The flaw can cause remote denial of service and requires user interaction for exploitation.

Why does it matter?

Remote DoS can disrupt affected devices, degrading user experience and compromising the availability of critical systems.

What should be done?

  • Monitor vendor security bulletin
  • Apply patches when released
  • Harden input validation
  • Restrict exposure with network access controls
  • Stay up‑to‑date with security updates
Note on uncertainty

The sources give limited detail on some technical conditions. Review the chain of evidence below before deciding how to act.

Chain of evidence and sources4 verified claims

CVE-2026-20552, MediaTek çipsetindeki ccci bileşeninde sınır dışı yazma hatasıdır ve uzaktan hizmet dışı bırakma (DoS) oluşturabilir.

S0 · daybreach-canonicalS1 · cvelist

İstismar için kullanıcı etkileşimi gereklidir ve aktif istismar raporları bulunmamaktadır.

S0 · daybreach-canonical

Bu CVE, CISA KEV programında yer almamaktadır; aktif istismar teyit edilmemiştir.

S0 · daybreach-canonical

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S0 · daybreach-canonical
Show the technical text from the sources

In ccci, there is a possible out of bounds write due to a missing bounds check. This could lead to remote denial of service with no additional execution privileges needed. User interaction is needed for exploitation. Patch ID: ALPS11523478 (Note: For MT6880, MT6890) / ALPS11297423 (Note: For MT6813, MT6986, MT6982, MT6980D) / AUTO00864897 (Note: For MT2735, MT2737); Issue ID: MSV-10724.

CWE: CWE-787

This explanation was compiled automatically from the source records. Scores, active exploitation, patch and exploit status come straight from the sources.

IMPACT: Affected Products and Software

Affected Products

The following products are affected by CVE-2026-20552 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.

IDVENDORPRODUCTACTION
1MediaTek, Inc.MediaTek chipset View
Total affected vendors: 1|Products: 1

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
The sources have not yet published a verified CVSS metric.

Patch and Remediation Guide

Solution & Remediation Advisory

Patch status unknown

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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-2026-20552 is associated with the following CWEs:

CWE-787: Out-of-bounds Write

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-2026-20552 weaknesses.

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

Official Sources and Advisories

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

Yama durumu bilinmiyor

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

Follow the vendor

MI
MediaTek, Inc. logo
MediaTek, Inc.

Weakness Type (CWE & CAPEC)

CWE-787

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CVE-2026-20552 · Out-of-bounds write in MediaTek, Inc.…