CVE-2026-20457: CWE-476 NULL Pointer Dereference in MediaTek, Inc. MediaTek chipset
In Modem, there is a possible system crash due to improper input validation. 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: MOLY01826924; Issue ID: MSV-7301.
AI Analysis
Technical Summary
CVE-2026-20457 is a vulnerability in the modem component of MediaTek chipsets caused by improper input validation resulting in a NULL pointer dereference. This can cause the system to crash, enabling a remote denial of service attack when a UE connects to a malicious base station. No user interaction or elevated privileges are required for exploitation. The issue is identified by MediaTek as MSV-7301 and has a patch ID MOLY01826924, though no official patch or remediation level is currently confirmed. The vulnerability affects a broad range of MediaTek chipset models.
Potential Impact
Successful exploitation results in a denial of service condition by crashing the modem system on affected MediaTek chipsets. This disrupts normal device operation but does not impact confidentiality or integrity. The attack vector requires network access via a rogue base station, and no user interaction or privileges are needed.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or temporary mitigation has been documented at this time. Users and administrators should monitor MediaTek advisories for updates and apply patches once available.
CVE-2026-20457: CWE-476 NULL Pointer Dereference in MediaTek, Inc. MediaTek chipset
Description
In Modem, there is a possible system crash due to improper input validation. 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: MOLY01826924; Issue ID: MSV-7301.
CVSS v3.1
Score 5.3medium
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-20457 is a vulnerability in the modem component of MediaTek chipsets caused by improper input validation resulting in a NULL pointer dereference. This can cause the system to crash, enabling a remote denial of service attack when a UE connects to a malicious base station. No user interaction or elevated privileges are required for exploitation. The issue is identified by MediaTek as MSV-7301 and has a patch ID MOLY01826924, though no official patch or remediation level is currently confirmed. The vulnerability affects a broad range of MediaTek chipset models.
Potential Impact
Successful exploitation results in a denial of service condition by crashing the modem system on affected MediaTek chipsets. This disrupts normal device operation but does not impact confidentiality or integrity. The attack vector requires network access via a rogue base station, and no user interaction or privileges are needed.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or temporary mitigation has been documented at this time. Users and administrators should monitor MediaTek advisories for updates and apply patches once available.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- MediaTek
- Date Reserved
- 2025-11-03T01:30:59.014Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a448b4d27e9c79719e6c5e1
Added to database: 07/01/2026, 03:36:45 UTC
Last enriched: 07/08/2026, 13:05:00 UTC
Last updated: 08/15/2026, 00:41:11 UTC
Views: 93
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