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
3 h ago
Resmî kaynaklarda yeterli kanıt bulunamadı. Bu sonuç “yama yok” anlamına gelmez.
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Vulnerability description
DayBreach AI Explanation
Verified against sourcesSources read
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Source agreement
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Evidence confidence
%61
Short explanation
A faulty bounds check in the MediaTek modem can cause an out-of-bounds write leading to remote denial of service. An attacker‑controlled rogue base station can trigger the flaw when a UE connects; no user interaction or additional execution privileges are required. (S0, S1)
The flaw can cause service interruptions in mobile networks, affecting user experience and network reliability.
What should be done?
- Monitor MediaTek’s official security bulletin.
- Since patch status is unverified, follow the vendor advisory.
- Deploy detection and blocking for rogue base stations in the network.
- Apply temporary mitigations until updates for affected chipsets are released.
The sources give limited detail on some technical conditions. Review the chain of evidence below before deciding how to act.
Chain of evidence and sources
CVE-2026-20563, MediaTek modemindeki hatalı bounds check nedeniyle uzaktan hizmet reddi (DoS) oluşturabilecek bir out-of-bounds write açığıdır.
Bu açığın tetiklenmesi için kullanıcı etkileşimi veya ek yürütme yetkileri gerekmez; sadece saldırganın kontrolündeki sahte bir baz istasyonuna bağlanan UE yeterlidir.
Yama durumu resmi kaynaklarda doğrulanamadı; bu nedenle yama mevcut olup olmadığını teyit etmek için vendor advisory izlenmelidir.
Show the technical text from the sources
In Modem, there is a possible out of bounds write due to an incorrect 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: MOLY01777997; Issue ID: MSV-8905.
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-2026-20563 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
İncelenen resmî kaynaklarda yama durumu doğrulanamadı. Bu sonuç “yama yok” anlamına gelmez.
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-2026-20563 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-2026-20563 weaknesses.
Official Sources and Advisories
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Weakness Type (CWE & CAPEC)
Similar Vulnerabilities
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