CVE-2025-48700
6.1 · MEDIUM Actively ExploitedOverview
CVE-2025-48700 is a medium-severity vulnerability affecting synacor zimbra_collaboration_suite. It was published on June 23, 2025 and has a CVSS 3.1 base score of 6.1 (MEDIUM). This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog, indicating active exploitation in the wild.
This vulnerability has a CVSS 3.1 base score of 6.1, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical Description
An issue was discovered in Zimbra Collaboration (ZCS) 8.8.15 and 9.0 and 10.0 and 10.1. A Cross-Site Scripting (XSS) vulnerability in the Zimbra Classic UI allows attackers to execute arbitrary JavaScript within the user's session, potentially leading to unauthorized access to sensitive information. This issue arises from insufficient sanitization of HTML content, specifically involving crafted tag structures and attribute values that include an @import directive and other script injection vectors. The vulnerability is triggered when a user views a crafted e-mail message in the Classic UI, requiring no additional user interaction.
Remediation
Check the references section for vendor advisories and patches from synacor. Update zimbra_collaboration_suite to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| synacor | zimbra_collaboration_suite | >= 10.0.0, < 10.0.12 | Affected |
Frequently Asked Questions
What is CVE-2025-48700?
CVE-2025-48700 is a medium-severity vulnerability affecting synacor zimbra_collaboration_suite. It was published on June 23, 2025 and has a CVSS 3.1 base score of 6.1 (MEDIUM). This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog, indicating active exploitation in the wild.
How severe is CVE-2025-48700?
This vulnerability has a CVSS 3.1 base score of 6.1, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2025-48700?
Check the references section for vendor advisories and patches from synacor. Update zimbra_collaboration_suite to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2025-48700?
CyberStrike's AI-powered security agents can automatically detect CVE-2025-48700 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
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