CVE-2026-33957

MEDIUM CVSS 3.1: 4.2 EPSS 0.13%
Updated Sep 22, 2026
Samsung
Parameter Value
CVSS 4.2 (MEDIUM)
Affected Versions before 2026-01-07
Type CWE-787 (Out-of-bounds Write)
Vendor Samsung
Public PoC No

An issue was discovered in CustOS Driver in Samsung Mobile Processor Exynos 1580. Requesting oversized shared memory from the custos_iwc device enables out-of-bounds read and write, potentially leading to memory corruption or information leakage.

Attack Parameters

Attack Vector
Local
Requires local access
Attack Complexity
High
Difficult to exploit
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
Low
Partial data leak
Integrity
None
No data modification
Availability
Low
Partial disruption

CVSS Vector v3.1

Weakness Type (CWE)

Vulnerable Products 1

Configuration From (including) Up to (excluding)
Samsung Exynos_1580_Firmware
cpe:2.3:a:samsung:exynos_1580_firmware:*:*:*:*:*:*:*:*
— <= 2026-01-07