Synacor known exploited vulnerabilities
Every Synacor CVE on CISA's Known Exploited Vulnerabilities catalog, newest addition first: 19 in all, 5 added in the last 12 months.
- CVE-2026-73570A remote code execution vulnerability exists in Zimbra Collaboration (ZCS) before 10.1.20 when the optional zimbra-snmp package is installedZimbra Collaboration
- CVE-2025-48700An issue was discovered in Zimbra Collaboration (ZCS) 8.8.15 and 9.0 and 10.0 and 10.1.
- CVE-2025-66376Zimbra Collaboration (ZCS) 10 before 10.0.18 and 10.1 before 10.1.13 allows Classic UI stored XSS via Cascading Style Sheets (CSS) @import dZimbra Collaboration
- CVE-2020-7796Zimbra Collaboration Suite (ZCS) before 8.8.15 Patch 7 allows SSRF when WebEx zimlet is installed and zimlet JSP is enabled.
- CVE-2025-68645A Local File Inclusion (LFI) vulnerability exists in the Webmail Classic UI of Zimbra Collaboration (ZCS) 10.0 and 10.1 because of improper
- CVE-2025-27915An issue was discovered in Zimbra Collaboration (ZCS) 9.0 and 10.0 and 10.1.
- CVE-2019-9621Zimbra Collaboration Suite before 8.6 patch 13, 8.7.x before 8.7.11 patch 10, and 8.8.x before 8.8.10 patch 7 or 8.8.x before 8.8.11 patch 3
- CVE-2024-27443An issue was discovered in Zimbra Collaboration (ZCS) 9.0 and 10.0.
- CVE-2023-34192Cross Site Scripting vulnerability in Zimbra ZCS v.8.8.15 allows a remote authenticated attacker to execute arbitrary code via a crafted scr
- CVE-2024-45519The postjournal service in Zimbra Collaboration (ZCS) before 8.8.15 Patch 46, 9 before 9.0.0 Patch 41, 10 before 10.0.9, and 10.1 before 10.
- CVE-2023-37580Zimbra Collaboration (ZCS) 8 before 8.8.15 Patch 41 allows XSS in the Zimbra Classic Web Client.
- CVE-2022-27926A reflected cross-site scripting (XSS) vulnerability in the /public/launchNewWindow.jsp component of Zimbra Collaboration (aka ZCS) 9.0 allo
- CVE-2022-41352An issue was discovered in Zimbra Collaboration (ZCS) 8.8.15 and 9.0.
- CVE-2022-37042Zimbra Collaboration Suite (ZCS) 8.8.15 and 9.0 has mboximport functionality that receives a ZIP archive and extracts files from it.
- CVE-2022-27925Zimbra Collaboration (aka ZCS) 8.8.15 and 9.0 has mboximport functionality that receives a ZIP archive and extracts files from it.
- CVE-2022-27924Zimbra Collaboration (aka ZCS) 8.8.15 and 9.0 allows an unauthenticated attacker to inject arbitrary memcache commands into a targeted insta
- CVE-2019-9670mailboxd component in Synacor Zimbra Collaboration Suite 8.7.x before 8.7.11p10 has an XML External Entity injection (XXE) vulnerability, as
- CVE-2018-6882Cross-site scripting (XSS) vulnerability in the ZmMailMsgView.getAttachmentLinkHtml function in Zimbra Collaboration Suite (ZCS) before 8.7
- CVE-2022-24682An issue was discovered in the Calendar feature in Zimbra Collaboration Suite 8.8.x before 8.8.15 patch 30 (update 1), as exploited in the w
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Frequently asked questions
How many Synacor vulnerabilities are in CISA KEV?
19 Synacor vulnerabilities are on CISA's Known Exploited Vulnerabilities catalog, 5 of them added in the last 12 months. The newest is CVE-2026-73570 (Zimbra Collaboration Suite (ZCS) OS Command Injection Vulnerability), added 2026-08-21.
Which Synacor products are in CISA KEV?
3 products, including Zimbra Collaboration Suite (ZCS), Zimbra Collaboration Suite, Zimbra Collaborate Suite (ZCS). Attackers have exploited every one of these entries in the wild, and US federal agencies must patch each by its CISA due date.
Are Synacor KEV vulnerabilities used by ransomware?
CISA knows ransomware campaigns exploit 6 of the 19 Synacor entries.