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Zimbra — security advisories

11 advisories8 exploitedlatest 2026-08-24⚡ RSS feed

Tracked Zimbra products:

Zimbra Collaboration Suite Collaboration Suite Zimbra Collaboration Suite (ZCS) Classic Web Client Zimbra Collaboration Suite (ZCS) Classic Web Client Collaboration

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Zimbra Multiple Vulnerabilities

unknownexploitedCVE-2026-73570 CVE-2026-10631 CVE-2026-50054 CVE-2026-50055hkcert2026-08-24

NCSC-2026-0324 [1.00] [M/H] Vulnerability fixed in Zimbra Collaboration Suite

unknownexploitedCVE-2026-73570ncsc-nl2026-08-23

Zimbra security advisory (AV26-816) – Update 1

unknownexploitedCVE-2026-73570cccs2026-08-21

CISA Adds One Known Exploited Vulnerability to Catalog

highexploitedCVE-2026-73570cisa2026-08-21

CVE-2026-73570: Zimbra Collaboration Suite (ZCS) OS Command Injection Vulnerability

criticalexploitedCVE-2026-73570cisa-kev2026-08-21

Russian State-Supported Cyber Actors Conduct Phishing Campaign Targeting Users of Zimbra Collaboration Suite

highexploitedCVE-2025-66376cisa2026-07-23

Zimbra security advisory (AV26-721)

unknowncccs2026-07-20

Zimbra security advisory (AV26-667)

unknowncccs2026-07-07

Zimbra Denial of Service Vulnerability

unknownCVE-2026-49975hkcert2026-06-22

CVE-2024-27443: Synacor Zimbra Collaboration Suite (ZCS) Cross-Site Scripting (XSS) Vulnerability

criticalexploitedCVE-2024-27443cisa-kev2025-05-19

[Update] Vulnerability in Zimbra Collaboration Suite (July 17, 2023)

unknownexploitedCVE-2023-37580cert-fr-alerte2023-07-17