CVE-2025-48700
CVSS v3
6.1
MEDIUM
EPSS Score
18.8 %
exploit probability
CISA KEV
Yes
known exploited
Exploitation
—
SSVC status
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 vecto
CISA Known Exploited Vulnerability
- Date Added
- 2026-04-20
- Patch Due Date
- 2026-04-23
- Ransomware Use
- Unknown
Technical details
- CVSS v3 Vector
- 3.1
- Published
- 2025-06-23
- Last Modified
- 2026-04-21
Frequently asked questions
What is CVE-2025-48700?
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 vecto
Is CVE-2025-48700 actively exploited?
Yes. CVE-2025-48700 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 4/23/2026.
What is the CVSS score for CVE-2025-48700?
CVE-2025-48700 has a CVSS v3 base score of 6.1 (MEDIUM severity), with vector string 3.1.
Is CVE-2025-48700 affecting your environment?
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