Zero Day MonitorZDM

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EST

PRE-CVEPATCHED

zimbra · zimbra collaboration suite (zcs) classic web

Zimbra Collaboration Suite Classic Web Client vulnerabilities

72% confidence

Description

Multiple vulnerabilities in Zimbra Collaboration Suite (ZCS) Classic Web Client versions prior to v10.1.20

Affected Products

Vendor	Product	Versions
zimbra	zimbra collaboration suite (zcs) classic web	< 10.1.20

Related News (1 articles)

Tier B

CCCS Canada34d ago

Zimbra security advisory (AV26-721)

→ No new info (linked only)

CISA KEV❌ No

Actively exploited❌ No

Patch available

10.1.20

PublishedJul 20, 2026

Last enriched34d ago

Tags

zimbraweb-clientcollaboration

Trending Score0

Source articles1

Independent1

Info Completeness6/14

Missing: cve_id, cvss, epss, cwe, kev, exploit, iocs, mitre_attack

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Related CVEs (5)

LOWCVE-2026-73574

CVE-2026-73574: In Zimbra Collaboration before 10.1.17, a local file inclusion (LFI) vulnerability exists in the Zimbra Classic Web Clie

LOWCVE-2026-73575

CVE-2026-73575: In Zimbra Collaboration (ZCS) before 10.1.17, a Cross-Site Request Forgery (CSRF) vulnerability exists in the Exchange W

LOWCVE-2026-73573

CVE-2026-73573: In Zimbra Collaboration (ZCS) before 10.1.17, a path traversal vulnerability exists in the Zimbra Briefcase document edi

MEDIUMCVE-2026-73576

CVE-2026-73576: In Zimbra Collaboration (ZCS) before 10.1.17, weak cryptographic key generation vulnerability exists in the OnlyOffice i

LOWCVE-2026-73571

CVE-2026-73571: An authorization bypass vulnerability exists in Zimbra Collaboration (ZCS) before 10.1.17 due to improper authorization

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Verification

State: reported

Confidence: 72%

Vulnerability Timeline

CVE Published

Jul 20, 2026

Patch Available

Jul 20, 2026

Discovered by ZDM

Jul 20, 2026