CVE-2022-27925Vulnerability
Synacor Zimbra Collaboration Suite (ZCS) Arbitrary File Upload Vulnerability
Reported by 3 independent sources · first reported by GreyNoise · last reported
Last reported 30 days ago
Fix due 1 Sep 2022
Used by ransomware: knownCISA KEV catalogue
higher than 99% of CVEsFIRST EPSS, as of 21 Oct 2026
What the reports say
4 reports, newest first · the exact sentence from each-
When Business Email Compromise Starts Rewriting Reality“Rapid7 tracked widespread exploitation of CVE-2022-27925 and CVE-2022-37042 in 2022, a path traversal chained with an authentication bypass that let attackers drop a JSP shell on a Zimbra server without credentials.”
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August 2026 CVE Landscape“CVE-2022-27925”
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June 2026 CVE Landscape“CVE-2022-27925”
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GreyNoise Detects Active Exploitation of CVEs Mentioned in Black Basta’s Leaked Chat Logs“CVE-2022-27925 – Synacor Zimbra Collaboration Suite (ZCS) Arbitrary File Upload Vulnerability”
Indicators reported together
named in the same reportsAlso named with it: CVE-2026-12569, CVE-2017-5753, CVE-2020-1472, CVE-2026-73570, CVE-2023-46747, CVE-2021-26855, CVE-2023-20198, CVE-2024-21762, CVE-2022-41082, CVE-2022-37042, CVE-2025-49113, CVE-2026-68820, CVE-2026-65400, CVE-2026-60004, CVE-2026-64849, CVE-2026-33824, CVE-2026-25089, CVE-2026-39808, CVE-2026-11645, CVE-2026-28318
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