Storm-1175
A financially motivated group that weaponizes newly disclosed product flaws fast, stealing data and deploying ransomware within days. It used Medusa before switching to its own StormEncryptor in August 2026.
- Alert level
- 3/ 5
- Reports & advisories (90 days)
- 0
- Known exploited CVEs
- 17
- Personal data leaked (disclosed)
- None confirmed
Attribution
- Assessed as a financially motivated cybercriminal actor — Microsoft Threat Intelligence
Exploited vulnerabilities and targeted products
CVE-2023-21529 CVE-2023-27350 CVE-2023-27351 CVE-2023-46805 CVE-2024-21887 CVE-2024-1708 CVE-2024-1709 CVE-2024-27198 CVE-2024-27199 CVE-2024-57726 CVE-2024-57727 CVE-2024-57728 CVE-2025-31161 CVE-2025-10035 CVE-2025-52691 CVE-2026-23760 CVE-2026-1731
If you run any of these products, first make sure they are updated to a fixed version.
How they attack
Entry
Hitting flaws right after disclosure
Like touring houses on the very day a lock model is announced as faulty, before owners replace it.
Inside
Staying in with remote-support tools
Like cutting yourself a copy of the repair company's key so you can come and go anytime.
Goal
Double extortion: encrypt and leak
Like locking your safe and also taking copies of the papers inside, threatening to publish them unless you pay.
Sources
Attributions are quoted as assessed by governments and security vendors. VulnPulse does not make attributions itself.
Leak counts only add up figures disclosed by the affected companies or authorities, never the attackers' own claims. We do not list victim names or link to leak sites.
The alert level is calculated automatically from reports and advisories in the last 90 days, known exploited vulnerabilities, and whether the group has targeted Japan.
Updated 2026-10-24 · daily