CVE-2026-47307 — Samsung Open Source Walrus Denial of Service
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: f339b8ee4ea701772e8ae640b3d1b12ac02b1ae9.
What This Means For You
- If your environment is affected by CWE-476, review your exposure and prioritize patching based on your environment. Monitor vendor advisories for CVE-2026-47307 updates and patches.
Related ATT&CK Techniques
🛡️ Detection Rules
2 rules · 6 SIEM formats2 detection rules auto-generated for this incident, mapped to MITRE ATT&CK. Sigma YAML is free — export to any SIEM format via the Intel Bot.
DoS Traffic Pattern Detection
title: DoS Traffic Pattern Detection
id: scw-2026-05-19-1
status: experimental
level: high
description: |
Detects volumetric traffic patterns consistent with denial of service attacks targeting your infrastructure.
author: SCW Feed Engine (auto-generated)
date: 2026-05-19
references:
- https://shimiscyberworld.com/posts/nvd-CVE-2026-47307/
tags:
- attack.impact
- attack.t1499
logsource:
category: firewall
detection:
selection:
dst_port:
- 80
- 443
condition: selection | count(src_ip) by dst_ip > 1000
falsepositives:
- Legitimate activity from CVE-2026-47307
Source: Shimi's Cyber World · License & reuse
Indicators of Compromise
| ID | Type | Indicator |
|---|---|---|
| CVE-2026-47307 | vulnerability | CVE-2026-47307 |
| CWE-476 | weakness | CWE-476 |
Written by SCW Vulnerability Desk
Source & Attribution
| Source Platform | NVD |
| Channel | National Vulnerability Database |
| Published | May 19, 2026 at 07:16 UTC |
This content was curated and summarized by Shimi's Cyber World for informational purposes. It is not copied or republished in full. All intellectual property rights remain with the original author and source.
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