Cadet Blizzard
aka Unit 29155, Ember Bear, UNC2589, DEV-0586, Frozenvista
A group identified as GRU Unit 29155. It ran data-wiping attacks in Ukraine and targets government, finance, transport and energy in NATO countries and beyond.
- Alert level
- 3/ 5
- Reports & advisories (90 days)
- 0
- Known exploited CVEs
- 5
- Personal data leaked (disclosed)
- None confirmed
Attribution
- Assessed as Russian GRU Unit 29155 — US FBI, CISA, NSA and partners in 9 countries
Exploited vulnerabilities and targeted products
CVE-2021-33044 CVE-2021-33045 CVE-2022-26134 CVE-2022-26138 CVE-2022-3236
If you run any of these products, first make sure they are updated to a fixed version.
How they attack
Entry
Exploiting internet-facing devices
Like finding a broken lock on the company's front gate (VPN or firewall) and walking in.
Goal
Wiping data
Like pretending to demand ransom while actually shredding every document.
Goal
Quietly stealing information
Like a spy who stays for months, copying files from the cabinet a little at a time.
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 2026-10-23 · daily