What is CVE-2026-47307?

CVE-2026-47307 is a medium-severity vulnerability in Samsung Walrus, classified under NULL Pointer Dereference. CVSS score: 5.5/10. Published 2026-05-19.

How severe is CVE-2026-47307?

Medium severity. CVSS v3 base score is 5.5 out of 10.

NULL pointer dereference in Samsung Walrus

CVE-2026-47307

NULL pointer dereference vulnerability in Samsung Open Source Walrus allows an attacker to cause a denial of service via a crafted WebAssembly module containing deeply nested instructions. This issue affects Walrus: f339b8ee4ea701772e8ae6…

EPSS: 0.000 (12.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.

Affected products

Samsung Walrus — versions 2026-04-27
Samsung Open Source Walrus — versions f339b8ee4ea701772e8ae640b3d1b12ac02b1ae9

Weakness classification (CWE)

CWE-476 — NULL Pointer Dereference

References

PSIRT@samsung.com (Patch, Issue Tracking)

Frequently asked questions

What is CVE-2026-47307?: CVE-2026-47307 is a medium-severity vulnerability in Samsung Walrus, classified under NULL Pointer Dereference. CVSS score: 5.5/10. Published 2026-05-19.
How severe is CVE-2026-47307?: Medium severity. CVSS v3 base score is 5.5 out of 10.