Out-of-Bounds Write in Samsung SveService Affects Local Privileged Users
CVE-2026-21018

6.8MEDIUM

Key Information:

Vendor

Samsung
Status
Samsung Devices
Vendor
CVE Published:
13 May 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-21018?

An out-of-bounds write vulnerability in Samsung's SveService prior to SMR May-2026 Release 1 allows local privileged attackers to exploit the flaw and execute arbitrary code. This security issue highlights the importance of promptly applying updates and securing environments against potential unauthorized access.

Affected Version(s)

Samsung Mobile Devices SMR May-2026 Release in Android 14, 15, 16

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-21018
Created by Filipemendonca1978

References

https://security.samsungmobile.com/securityUpdate.smsb?ye...

CVSS V4

Score:
6.8
Severity:
MEDIUM
Confidentiality:
None
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

.