Out-of-bounds write in MediaTek, Inc. MediaTek Chipset
CVSS score
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EPSS probability
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Risk score
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Published
2 h ago
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Vulnerability description
DayBreach AI Explanation
Verified against sourcesSources read
2
Source agreement
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Evidence confidence
%63
Short explanation
A missing bounds check in the MediaTek modem leads to an out-of-bounds write that can cause remote denial-of-service. Exploitation requires the attacker to have System privileges and the user to connect to a rogue base station; user interaction is needed. Patch status is not confirmed in official sources.
The flaw can cause service interruptions in mobile networks, degrading user experience and connectivity.
What should be done?
- Monitor MediaTek security bulletins for patch announcements
- Apply the vendor‑provided patch (e.g., MOLY01923663 / ALPS11315955) when released
- Ensure UEs connect only to trusted base stations
- Enable network authentication and integrity checks
- Deploy IDS/IPS to detect rogue base stations
Chain of evidence and sources
Bu CVE, MediaTek modeminde sınır kontrolünün eksikliği nedeniyle oluşan bir sınır dışı yazma hatasını tanımlar.
Saldırgan, sistem yetkilerine sahip olduğunda ve kullanıcı sahte bir baz istasyonuna bağlandığında uzaktan hizmet reddi (DoS) istismarı gerçekleştirebilir; istismar için kullanıcı etkileşimi gereklidir.
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Show the technical text from the sources
In Modem, there is a possible out of bounds write 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, if a malicious actor has already obtained the System privilege. User interaction is needed for exploitation. Patch ID: MOLY01923663 / ALPS11315955; Issue ID: MSV-10866.
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-2026-20566 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.
| ID | VENDOR | PRODUCT | ACTION |
|---|---|---|---|
| 1 | MediaTek, Inc. | MediaTek chipset | View |
RED HAT CSAF/VEX: Product Impact Check
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.
| SCORE | VERSION | SEVERITY | VECTOR | SOURCE |
|---|---|---|---|---|
| The sources have not yet published a verified CVSS metric. | ||||
Patch and Remediation Guide
Solution & Remediation Advisory
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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-2026-20566 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-2026-20566 weaknesses.
Official Sources and Advisories
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Weakness Type (CWE & CAPEC)
Similar Vulnerabilities
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