CVE-2026-28733 — Code Execution
CVE-2026-28733 — in OpenHarmony v6.0 and prior versions allow a local attacker arbitrary code execution.
What This Means For You
- If your environment is affected by CWE-416, review your exposure and prioritize patching based on your environment. Monitor vendor advisories for CVE-2026-28733 updates and patches.
Related ATT&CK Techniques
🛡️ Detection Rules
3 rules · 6 SIEM formats3 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.
Suspicious File Download via Email
Sigma YAML — free preview
title: Suspicious File Download via Email
id: scw-2026-05-19-1
status: experimental
level: medium
description: |
Detects execution of suspicious processes spawned from email clients, potentially triggered by a phishing attachment.
author: SCW Feed Engine (auto-generated)
date: 2026-05-19
references:
- https://shimiscyberworld.com/posts/nvd-CVE-2026-28733/
tags:
- attack.execution
- attack.t1204.002
logsource:
category: process_creation
product: windows
detection:
selection:
ParentImage|endswith:
- '\outlook.exe'
- '\thunderbird.exe'
Image|endswith:
- '\cmd.exe'
- '\powershell.exe'
- '\wscript.exe'
- '\cscript.exe'
condition: selection
falsepositives:
- Legitimate activity from CVE-2026-28733
Source: Shimi's Cyber World · License & reuse
Indicators of Compromise
| ID | Type | Indicator |
|---|---|---|
| CVE-2026-28733 | vulnerability | CVE-2026-28733 |
| CWE-416 | weakness | CWE-416 |
Source & Attribution
| Source Platform | NVD |
| Channel | National Vulnerability Database |
| Published | May 19, 2026 at 07:16 UTC |
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