# BlueHammer and RedSun

> As of 2026-05-30, BlueHammer and RedSun is a China and Iran-nexus threat actor tracked by Threadlinqs Intelligence across 1 threat spanning vulnerability. Also known as BlueHammer, RedSun, VANGUARD PANDA, UNC5325.

- **Nation:** China and Iran
- **Tracked threats:** 1
- **Categories:** VULNERABILITY
- **Also known as:** BlueHammer, RedSun, VANGUARD PANDA, UNC5325, APT42, PIONEER KITTEN, Mint Sandstorm overlap
- **As of:** 2026-05-30

## Tracked threats

- [BlueHammer & RedSun: Windows Defender CVE-2026-33825 Zero-Day Remote Code Execution](https://intel.threadlinqs.com/threat/TL-2026-0382) — CRITICAL

## Related CVEs

1 CVE referenced by tracked BlueHammer and RedSun activity.

- [CVE-2026-33825](https://intel.threadlinqs.com/cve/CVE-2026-33825)

## Full data

Infrastructure, IOC values and detection queries (Splunk SPL / Microsoft KQL / Sigma) require the Threadlinqs MCP server (Purple tier): https://intel.threadlinqs.com/mcp

Canonical: https://intel.threadlinqs.com/actor/BlueHammer%20and%20RedSun