CVE-2026-28733 — Code Execution

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 formats

3 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.

medium T1204.002 Execution

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

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Indicators of Compromise

IDTypeIndicator
CVE-2026-28733 vulnerability CVE-2026-28733
CWE-416 weakness CWE-416
Source & Attribution
Source PlatformNVD
ChannelNational Vulnerability Database
PublishedMay 19, 2026 at 07:16 UTC

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