CVE-2026-21018 Memory corruption in Samsung Mobile Devices

What is CVE-2026-21018?

CVE-2026-21018 is a medium-severity memory corruption vulnerability in Samsung Android, published on 13 May 2026. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

Out-of-bounds write in SveService prior to SMR May-2026 Release 1 allows local privileged attackers to execute arbitrary code.

Weakness: CWE-787

Which versions are affected by CVE-2026-21018?

It affects 1 product.

Products include Samsung Android.

How do I fix CVE-2026-21018?

No fix has been published for CVE-2026-21018 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2026-21018 being exploited?

There is no known exploitation of CVE-2026-21018 in the wild and no public exploit code.

Public exploit code: 2 proofs of concept on GitHub.

Other vulnerabilities in Samsung Android

• CVE-2025-21042 Samsung Mobile Devices Out-of-Bounds Write Exploited High 8.8
• CVE-2025-21043 Samsung Mobile Devices Out-of-Bounds Write Exploited High 8.8
• CVE-2021-25487 Samsung Mobile Devices Out-of-Bounds Read Exploited High 7.3
• CVE-2021-25394 Samsung Mobile Devices Race Condition Exploited Medium 6.4
• CVE-2021-25395 Samsung Mobile Devices Race Condition Exploited Medium 6.4

All Samsung Android vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-rf32-rw6v-wv3p.