Loading threat actor…
An as-yet unattributed threat actor or set of opportunistic threat actors has been observed exploiting CVE-2025-53690, a critical ViewState deserialization vulnerability affecting Sitecore Experience Manager, Experience Platform, and Experience Commerce. The activity abused exposed ASP.NET machine keys that had been published in legacy Sitecore deployment guidance, enabling remote code execution against vulnerable Sitecore servers. Observed tradecraft indicates exploitation of unauthenticated ViewState handling in Sitecore, particularly through a page that exposed a usable ViewState attack surface. The intrusion pattern is consistent with opportunistic exploitation of insecure key management rather than a clearly established, coordinated campaign. High-confidence reporting indicates active exploitation and remote code execution, with the broader risk profile including persistence and stealth on compromised servers. Attribution to a specific named cluster, nation-state, or criminal organization is currently not available.
Mallory correlates actor tradecraft and target patterns against your stack, your sector, and your geography. See overlap before they land.
Who, where, and (when attributed) which flag flies behind the operation. Pulled from open-source reporting and Mallory's analyst review.
Sectors the actor has been observed targeting.
1 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
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.