Attackers exploit Barracuda ESG bypass and command injection
Barracuda says a small number of organizations were hit; chaining the bugs can yield root on the device.
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Barracuda says a small number of organizations were hit; chaining the bugs can yield root on the device.

China-linked Armory Castle exploited BeyondTrust Remote Support zero-day CVE-2026-102764 and deployed the SAWFLY webshell.

China-linked ARMORY CASTLE exploited BeyondTrust zero-day CVE-2026-102764 for root access before disclosure.
CISA orders agencies to patch actively exploited Citrix NetScaler flaw CVE-2026-88779, a confirmed denial-of-service bug.
Unknown attackers exploited critical Citrix NetScaler zero-days CVE-2026-88771/88772 since early September, deploying custom WHIPSHOT and SLAPSHOT malware for persistence and tunneling.

SonicWall warns two zero-days (CVE-2026-83548 SSRF, CVE-2026-83549 post-auth RCE) in SMA1000 appliances are being actively exploited.
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