CVE-2025-48700
Synacor / Zimbra Collaboration Suite (ZCS)
Added 2026-04-20
Due 2026-04-23
Synacor Zimbra Collaboration Suite (ZCS) Cross-site Scripting Vulnerability
Synacor Zimbra Collaboration Suite (ZCS) contains a cross-site scripting vulnerability that could allow attackers to execute arbitrary JavaScript within the user's session, potentially leading to unauthorized access to sensitive information.
Required action
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Notes: https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories ; https://nvd.nist.gov/vuln/detail/CVE-2025-48700
Metadata
| Added to KEV | 2026-04-20 |
| Remediation due | 2026-04-23 |
| Ransomware use | Unknown |
| CWEs | CWE-79 |
| Ingested | 2026-04-24 15:03:13 |
Cross-mesh regulatory overlay
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