Cybersecurity Brief – 2026-09-06

Major Incidents or Breaches

Attackers exploited a critical vulnerability in JetBrains TeamCity to breach the Cadence platform, extracting AWS credentials and prompting JetBrains to urge users to revoke and rotate all credentials associated with the incident ^[4].
Hardware wallet manufacturer Trezor disclosed that a breach at its shipping provider ShipMonk exposed data of 67,000 U.S. customers, including information that was previously believed to have been deleted ^[6].
Over 5,400 compromised small-business websites are being used to deliver ClickFix malware payloads, which are stored on the BNB Smart Chain blockchain, as part of a large-scale cybercriminal operation ^[7].

Newly Discovered Vulnerabilities

A new unpatched zero-day vulnerability in Magento Open Source and Adobe Commerce is being actively exploited by attackers to deploy backdoors on online stores, allowing remote code execution without authentication ^[3].
A critical security flaw (CVE-2026-32475, CVSS 9.8) in the Elementor Pro WordPress plugin is being exploited in the wild, enabling arbitrary file uploads via the form submission handler ^[10].
Two security vulnerabilities, including one critical arbitrary code execution flaw, have been disclosed and patched in VMware Workstation and Fusion, allowing VM administrators to execute code on the host under certain conditions ^[5].

Notable Threat Actor Activity

Attackers are hijacking MikroTik routers by exploiting internet-exposed SSH services, gaining full administrative control without authentication ^[1].
Four previously undocumented modules linked to the REVSTEALER information stealer have been identified; these modules persist after the main malware is removed and are capable of disabling Windows Update and Defender to facilitate crypto mining ^[2].

Trends, Tools, or Tactics of Interest

Threat actors are leveraging blockchain technology, specifically smart contracts on the BNB Smart Chain, to store and distribute malware payloads in the ClickFix campaign, complicating takedown efforts and attribution ^[7].