7.5
High
CVE-2026-20499 In Modem, there is a possible out of bounds write due to a missing bounds check
Description
In Modem, there is a possible out of bounds write due to a missing bounds check. This could lead to remote escalation of privilege, 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: MOLY01857954; Issue ID: MSV-8247.
CVSS 3.1 detail
Vector CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:HExploitable from the adjacent network, without an account and without any user action; an attacker can seriously compromise confidentiality, integrity or availability.
- Attack vector
- Adjacent network
- Attack complexity
- High
- Privileges required
- None
- Interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| MediaTek chipset | Versions not published |
Other CVEs of MediaTek chipset
The 230 CVEs of MediaTek chipset →
CVE-2026-68591
In Modem, there is a possible escalation of privilege due to a permissions bypass
6.7
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CVE-2026-68590
In ip_stack, there is a possible out of bounds read due to improper input validation
5.3
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CVE-2026-68589
In Modem, there is a possible out of bounds write due to a missing bounds check
6.7
Medium
CVE-2026-68588
In Modem, there is a possible way (for XXX) to XXXXX due to an integer overflow
5.3
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