UAC-0233
UAC-0233 is a threat activity cluster tracked by CERT-UA. According to the State Special Communications Service of Ukraine, the campaign has exploited CVE-2025-48700, a zero-click cross-site scripting vulnerability in Synacor Zimbra Collaboration Suite, since late September 2025. Successful exploitation allowed attackers to access mailbox contents, TGZ archives of correspondence, MFA backup codes, application passwords, and the global address book. The provided content does not attribute UAC-0233 to a specific nation state or provide additional aliases, sub-groups, or broader targeting beyond this Zimbra exploitation activity.
Know when an actor pivots toward your sector
Mallory correlates actor tradecraft and target patterns against your stack, your sector, and your geography. See overlap before they land.
Targeting
Who, where, and (when attributed) which flag flies behind the operation. Pulled from open-source reporting and Mallory's analyst review.
Where they target
Geographies tied to known operations.
- 🇺🇦 Ukraine
Tradecraft
3 distinct techniques observed across reporting, grouped by tactic. Hover any cell for the evidence excerpt; click through for MITRE's full description.
Associated vulnerabilities
1 CVE this actor has used in observed campaigns. 1 of them exploited in the wild.
Recent activity
1 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
The version that knows your environment.
Match sector + geo + tech-stack targeting against your real footprint.
Every observed MITRE ATT&CK technique, grouped by tactic.
Families this actor is known to deploy, with IOCs and behavior.
CVEs this actor has used in known campaigns.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Domains, IPs, and hashes tied to this actor, refreshed continuously.