CVE-2026-33957
Received Received - Intake

Memory Corruption in Samsung Exynos 1580 CustOS Driver

Publication date: 2026-09-14

Last updated on: 2026-09-14

Assigner: MITRE

Description
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.

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Meta Information

Published
2026-09-14
Last Modified
2026-09-14
Generated
2026-09-14
AI Q&A
2026-09-14
EPSS Evaluated
N/A
NVD
CVE-2026-33957
EUVD
EUVD-2026-77160

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
samsung exynos_1580 *
samsung custos_driver *

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-787 The product writes data past the end, or before the beginning, of the intended buffer.

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Executive Summary

This vulnerability exists in Samsung's Exynos 1580 mobile processor's CustOS Driver. It allows an attacker to request oversized shared memory from the custos_iwc device, which can cause out-of-bounds read and write operations. This may lead to memory corruption or unauthorized information leakage.

Detection Guidance

Detection requires checking for irregular memory access patterns or system instability related to the CustOS Driver in Samsung Exynos 1580. Monitor system logs for memory corruption events or unexpected crashes. Samsung has not provided specific detection commands, but examining driver logs and memory dumps may help identify anomalies.

Impact Analysis

The vulnerability could cause system instability or crashes due to irregular memory access. It may also allow attackers to access sensitive information stored in memory, potentially leading to data breaches or unauthorized system control.

Compliance Impact

The vulnerability enables out-of-bounds read and write operations, which could lead to memory corruption or information leakage. This type of issue may compromise data confidentiality and integrity, potentially violating requirements under GDPR (data protection) and HIPAA (health data security).

Mitigation Strategies

Apply the latest security patches from Samsung for the Exynos 1580 processor and CustOS Driver to address the out-of-bounds memory access issue.

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