MEDIUMVulnerability
Global

Attackers Tampered with AOMEI Backupper's Update Servers for Minutes to Deliver a Backdoor

·Source: The Hacker News

Updated:

Executive Summary

Attackers repeatedly changed the files that AOMEI Backupper fetches from the vendor's own update servers, in windows of five to ten minutes at a time between May and July 2026, so that any copy of the Windows backup program that checked for an update during one of those windows would download and run a backdoor. Google Threat Intelligence Group, Mandiant, and ManageEngine's Threat Analysis

Analysis

Attackers repeatedly changed the files that AOMEI Backupper fetches from the vendor's own update servers, in windows of five to ten minutes at a time between May and July 2026, so that any copy of the Windows backup program that checked for an update during one of those windows would download and run a backdoor. Google Threat Intelligence Group, Mandiant, and ManageEngine's Threat Analysis
Source Attribution

Originally published by The Hacker News on Oct 16, 2026.

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