Out-of-Bounds Write Vulnerability in Samsung Exynos and Wearable Processors
CVE-2025-62818

9.8CRITICAL

Key Information:

Vendor

Samsung
Status
Exynos Processors and Wearable Processors
Vendor
CVE Published:
7 April 2026

What is CVE-2025-62818?

A vulnerability has been identified in Samsung's Exynos and wearable processors, which leads to an out-of-bounds write condition. This issue arises from a disparity in the TP-UDHI and UDL values during the processing of SMS TP-UD packets. If exploited, this flaw could allow attackers to manipulate memory, potentially leading to unauthorized access or system instability. It is critical for users of affected devices to apply available updates and patches to mitigate associated risks effectively.

References

https://semiconductor.samsung.com/support/quality-support...
https://semiconductor.samsung.com/support/quality-support...

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.