Sunday, 18 Oct 2026 18 Shawwal 2026 AH Beirut
Technology · Cybersecurity · 1 Oct 2026, 13:09 ·1 min read ·👁 4 views

Exploiting a Vulnerability in Zimbra Servers to Steal Authentication Data

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Microsoft Security Research documented a series of attacks exploiting a zero-day vulnerability in Zimbra Collaboration Suite servers to steal authentication secrets and mailbox data. The vulnerability (CVE-2026-73570) allows unauthenticated OS command injection via SNMP notifications, affecting versions older than 10.1.20. Shadowserver reported 8,200 unpatched instances versus 274 confirmed compromises. Zimbra released a security update on July 20, 2026, and CISA added the flaw to its KEV catalog on August 21 with a deadline of August 24.
🏢 Microsoft Security Research 🏢 Zimbra 🏢 CERT Polska 🏢 CISA 🏢 Shadowserver
#اختراق#أمن سيبراني#CISA#مايكروسوفت#ثغرة أمنية#Zimbra#يوم صفر#SNMP
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