VulnerabilityBleeping Computer
8.9 — CRITICAL
CISA orders urgent patching of actively exploited Zimbra flaw
The Cybersecurity and Infrastructure Security Agency (CISA) has ordered U.S. government agencies to patch an actively exploited vulnerability in Zimbra Collaboration Suite (ZCS) within three days. [...]
🤖 AI BriefingAuto-generated threat analysis
🔍Threat Overview
A remote code execution vulnerability (CVE-2026-73570) in Zimbra Collaboration Suite has been actively exploited, targeting U.S. government agencies and potentially other organizations using the suite, with a high severity score of 8.9.
⚙️Technical Details
Affected Systems
Zimbra Collaboration Suite servers
Attack Vectors
NETWORK (via SNMP notifications)
💥Impact Assessment
Severity: critical
Who Is at Risk
U.S. government agencies and potentially other organizations using Zimbra Collaboration Suite
🛡️Recommended Actions
1Immediately patch the Zimbra Collaboration Suite version 10.1.20 with the latest security update
2Disable SNMP notifications on all exposed systems
3Monitor logs for suspicious activity, such as unexpected service restarts or file creations by user zimbra
📦Affected Products
Synacor Zimbra Collaboration Suite
🔐NVD Verified DataVERIFIED
CVE-2026-73570 ↗CVSS 8.9 — HIGH
Attack Vector
NETWORK
Complexity
HIGH
Vector String
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:LWeaknesses
CWE-78
Affected Products (CPE)
Synacor Zimbra Collaboration Suite
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