CVE
CVE-2025-48700
Synacor · Zimbra collaboration suite
- First Reported
- Jul 10, 2026
- Latest Reported
- Jul 10, 2026
CVE Enrichment
- CVSS
- 6.1 MEDIUM
- EPSS
- 1.71%
- EPSS Percentile
- 77.30%
- CISA KEV
- YES — Known Exploited Vulnerability
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.
Technical Details
- CVSS Version
- 3.1
- CNA / NVD Source
- [email protected]
- Published
- 23-Jun-2025 22:15
- Last Modified
- 17-Jun-2026 16:30
- EPSS Date
- 2026-10-28
- CWE
- CWE-79
CVSS Vector
CVSS:3.1 AV:N /
AC:L /
PR:N /
UI:R /
S:C /
C:L /
I:L /
A:N
CISA KEV Details
- Date Added
- 2026-04-20
- Remediation Due
- 2026-04-23
- Known Ransomware Campaign Use
- Unknown
- 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
Affected Products / Versions
- synacor / zimbra_collaboration_suite
Source: NVD CPE · affected
Version / affected range: * · from (inclusive) 10.0.0 · before (exclusive) 10.0.12
cpe:2.3:a:synacor:zimbra_collaboration_suite:*:*:*:*:*:*:*:* - synacor / zimbra_collaboration_suite
Source: NVD CPE · affected
Version / affected range: * · from (inclusive) 10.1.0 · before (exclusive) 10.1.4
cpe:2.3:a:synacor:zimbra_collaboration_suite:*:*:*:*:*:*:*:* - synacor / zimbra_collaboration_suite
Source: NVD CPE · affected
Version / affected range: 8.8.15
cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:-:*:*:*:*:*:* - synacor / zimbra_collaboration_suite
Source: NVD CPE · affected
Version / affected range: 8.8.15
cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p1:*:*:*:*:*:* - synacor / zimbra_collaboration_suite
Source: NVD CPE · affected
Version / affected range: 8.8.15
cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p10:*:*:*:*:*:* - synacor / zimbra_collaboration_suite
Source: NVD CPE · affected
Version / affected range: 8.8.15
cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p11:*:*:*:*:*:* - synacor / zimbra_collaboration_suite
Source: NVD CPE · affected
Version / affected range: 8.8.15
cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p12:*:*:*:*:*:* - synacor / zimbra_collaboration_suite
Source: NVD CPE · affected
Version / affected range: 8.8.15
cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p13:*:*:*:*:*:* - synacor / zimbra_collaboration_suite
Source: NVD CPE · affected
Version / affected range: 8.8.15
cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p14:*:*:*:*:*:* - synacor / zimbra_collaboration_suite
Source: NVD CPE · affected
Version / affected range: 8.8.15
cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p15:*:*:*:*:*:* - synacor / zimbra_collaboration_suite
Source: NVD CPE · affected
Version / affected range: 8.8.15
cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p16:*:*:*:*:*:* - synacor / zimbra_collaboration_suite
Source: NVD CPE · affected
Version / affected range: 8.8.15
cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p17:*:*:*:*:*:* - synacor / zimbra_collaboration_suite
Source: NVD CPE · affected
Version / affected range: 8.8.15
cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p18:*:*:*:*:*:* - synacor / zimbra_collaboration_suite
Source: NVD CPE · affected
Version / affected range: 8.8.15
cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p19:*:*:*:*:*:* - synacor / zimbra_collaboration_suite
Source: NVD CPE · affected
Version / affected range: 8.8.15
cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p2:*:*:*:*:*:* - synacor / zimbra_collaboration_suite
Source: NVD CPE · affected
Version / affected range: 8.8.15
cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p20:*:*:*:*:*:* - synacor / zimbra_collaboration_suite
Source: NVD CPE · affected
Version / affected range: 8.8.15
cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p21:*:*:*:*:*:* - synacor / zimbra_collaboration_suite
Source: NVD CPE · affected
Version / affected range: 8.8.15
cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p22:*:*:*:*:*:* - synacor / zimbra_collaboration_suite
Source: NVD CPE · affected
Version / affected range: 8.8.15
cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p23:*:*:*:*:*:* - synacor / zimbra_collaboration_suite
Source: NVD CPE · affected
Version / affected range: 8.8.15
cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p24:*:*:*:*:*:* - synacor / zimbra_collaboration_suite
Source: NVD CPE · affected
Version / affected range: 8.8.15
cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p25:*:*:*:*:*:* - synacor / zimbra_collaboration_suite
Source: NVD CPE · affected
Version / affected range: 8.8.15
cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p26:*:*:*:*:*:* - synacor / zimbra_collaboration_suite
Source: NVD CPE · affected
Version / affected range: 8.8.15
cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p27:*:*:*:*:*:* - synacor / zimbra_collaboration_suite
Source: NVD CPE · affected
Version / affected range: 8.8.15
cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p28:*:*:*:*:*:* - synacor / zimbra_collaboration_suite
Source: NVD CPE · affected
Version / affected range: 8.8.15
cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p29:*:*:*:*:*:* - synacor / zimbra_collaboration_suite
Source: NVD CPE · affected
Version / affected range: 8.8.15
cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p3:*:*:*:*:*:* - synacor / zimbra_collaboration_suite
Source: NVD CPE · affected
Version / affected range: 8.8.15
cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p30:*:*:*:*:*:* - synacor / zimbra_collaboration_suite
Source: NVD CPE · affected
Version / affected range: 8.8.15
cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p31:*:*:*:*:*:* - synacor / zimbra_collaboration_suite
Source: NVD CPE · affected
Version / affected range: 8.8.15
cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p31.1:*:*:*:*:*:* - synacor / zimbra_collaboration_suite
Source: NVD CPE · affected
Version / affected range: 8.8.15
cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p32:*:*:*:*:*:* - synacor / zimbra_collaboration_suite
Source: NVD CPE · affected
Version / affected range: 8.8.15
cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p33:*:*:*:*:*:* - synacor / zimbra_collaboration_suite
Source: NVD CPE · affected
Version / affected range: 8.8.15
cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p34:*:*:*:*:*:* - synacor / zimbra_collaboration_suite
Source: NVD CPE · affected
Version / affected range: 8.8.15
cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p35:*:*:*:*:*:* - synacor / zimbra_collaboration_suite
Source: NVD CPE · affected
Version / affected range: 8.8.15
cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p36:*:*:*:*:*:* - synacor / zimbra_collaboration_suite
Source: NVD CPE · affected
Version / affected range: 8.8.15
cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p37:*:*:*:*:*:* - synacor / zimbra_collaboration_suite
Source: NVD CPE · affected
Version / affected range: 8.8.15
cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p38:*:*:*:*:*:* - synacor / zimbra_collaboration_suite
Source: NVD CPE · affected
Version / affected range: 8.8.15
cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p39:*:*:*:*:*:* - synacor / zimbra_collaboration_suite
Source: NVD CPE · affected
Version / affected range: 8.8.15
cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p4:*:*:*:*:*:* - synacor / zimbra_collaboration_suite
Source: NVD CPE · affected
Version / affected range: 8.8.15
cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p40:*:*:*:*:*:* - synacor / zimbra_collaboration_suite
Source: NVD CPE · affected
Version / affected range: 8.8.15
cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p41:*:*:*:*:*:* - synacor / zimbra_collaboration_suite
Source: NVD CPE · affected
Version / affected range: 8.8.15
cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p42:*:*:*:*:*:* - synacor / zimbra_collaboration_suite
Source: NVD CPE · affected
Version / affected range: 8.8.15
cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p43:*:*:*:*:*:* - synacor / zimbra_collaboration_suite
Source: NVD CPE · affected
Version / affected range: 8.8.15
cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p44:*:*:*:*:*:* - synacor / zimbra_collaboration_suite
Source: NVD CPE · affected
Version / affected range: 8.8.15
cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p45:*:*:*:*:*:* - synacor / zimbra_collaboration_suite
Source: NVD CPE · affected
Version / affected range: 8.8.15
cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p46:*:*:*:*:*:* - synacor / zimbra_collaboration_suite
Source: NVD CPE · affected
Version / affected range: 8.8.15
cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p5:*:*:*:*:*:* - synacor / zimbra_collaboration_suite
Source: NVD CPE · affected
Version / affected range: 8.8.15
cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p6:*:*:*:*:*:* - synacor / zimbra_collaboration_suite
Source: NVD CPE · affected
Version / affected range: 8.8.15
cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p7:*:*:*:*:*:* - synacor / zimbra_collaboration_suite
Source: NVD CPE · affected
Version / affected range: 8.8.15
cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p8:*:*:*:*:*:* - synacor / zimbra_collaboration_suite
Source: NVD CPE · affected
Version / affected range: 8.8.15
cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p9:*:*:*:*:*:* - synacor / zimbra_collaboration_suite
Source: NVD CPE · affected
Version / affected range: 9.0.0
cpe:2.3:a:synacor:zimbra_collaboration_suite:9.0.0:-:*:*:*:*:*:* - synacor / zimbra_collaboration_suite
Source: NVD CPE · affected
Version / affected range: 9.0.0
cpe:2.3:a:synacor:zimbra_collaboration_suite:9.0.0:p1:*:*:*:*:*:* - synacor / zimbra_collaboration_suite
Source: NVD CPE · affected
Version / affected range: 9.0.0
cpe:2.3:a:synacor:zimbra_collaboration_suite:9.0.0:p10:*:*:*:*:*:* - synacor / zimbra_collaboration_suite
Source: NVD CPE · affected
Version / affected range: 9.0.0
cpe:2.3:a:synacor:zimbra_collaboration_suite:9.0.0:p11:*:*:*:*:*:* - synacor / zimbra_collaboration_suite
Source: NVD CPE · affected
Version / affected range: 9.0.0
cpe:2.3:a:synacor:zimbra_collaboration_suite:9.0.0:p12:*:*:*:*:*:* - synacor / zimbra_collaboration_suite
Source: NVD CPE · affected
Version / affected range: 9.0.0
cpe:2.3:a:synacor:zimbra_collaboration_suite:9.0.0:p13:*:*:*:*:*:* - synacor / zimbra_collaboration_suite
Source: NVD CPE · affected
Version / affected range: 9.0.0
cpe:2.3:a:synacor:zimbra_collaboration_suite:9.0.0:p14:*:*:*:*:*:* - synacor / zimbra_collaboration_suite
Source: NVD CPE · affected
Version / affected range: 9.0.0
cpe:2.3:a:synacor:zimbra_collaboration_suite:9.0.0:p15:*:*:*:*:*:* - synacor / zimbra_collaboration_suite
Source: NVD CPE · affected
Version / affected range: 9.0.0
cpe:2.3:a:synacor:zimbra_collaboration_suite:9.0.0:p16:*:*:*:*:*:* - synacor / zimbra_collaboration_suite
Source: NVD CPE · affected
Version / affected range: 9.0.0
cpe:2.3:a:synacor:zimbra_collaboration_suite:9.0.0:p17:*:*:*:*:*:* - synacor / zimbra_collaboration_suite
Source: NVD CPE · affected
Version / affected range: 9.0.0
cpe:2.3:a:synacor:zimbra_collaboration_suite:9.0.0:p18:*:*:*:*:*:* - synacor / zimbra_collaboration_suite
Source: NVD CPE · affected
Version / affected range: 9.0.0
cpe:2.3:a:synacor:zimbra_collaboration_suite:9.0.0:p19:*:*:*:*:*:* - synacor / zimbra_collaboration_suite
Source: NVD CPE · affected
Version / affected range: 9.0.0
cpe:2.3:a:synacor:zimbra_collaboration_suite:9.0.0:p2:*:*:*:*:*:* - synacor / zimbra_collaboration_suite
Source: NVD CPE · affected
Version / affected range: 9.0.0
cpe:2.3:a:synacor:zimbra_collaboration_suite:9.0.0:p20:*:*:*:*:*:* - synacor / zimbra_collaboration_suite
Source: NVD CPE · affected
Version / affected range: 9.0.0
cpe:2.3:a:synacor:zimbra_collaboration_suite:9.0.0:p21:*:*:*:*:*:* - synacor / zimbra_collaboration_suite
Source: NVD CPE · affected
Version / affected range: 9.0.0
cpe:2.3:a:synacor:zimbra_collaboration_suite:9.0.0:p22:*:*:*:*:*:* - synacor / zimbra_collaboration_suite
Source: NVD CPE · affected
Version / affected range: 9.0.0
cpe:2.3:a:synacor:zimbra_collaboration_suite:9.0.0:p23:*:*:*:*:*:* - synacor / zimbra_collaboration_suite
Source: NVD CPE · affected
Version / affected range: 9.0.0
cpe:2.3:a:synacor:zimbra_collaboration_suite:9.0.0:p24:*:*:*:*:*:* - synacor / zimbra_collaboration_suite
Source: NVD CPE · affected
Version / affected range: 9.0.0
cpe:2.3:a:synacor:zimbra_collaboration_suite:9.0.0:p24.1:*:*:*:*:*:* - synacor / zimbra_collaboration_suite
Source: NVD CPE · affected
Version / affected range: 9.0.0
cpe:2.3:a:synacor:zimbra_collaboration_suite:9.0.0:p25:*:*:*:*:*:* - synacor / zimbra_collaboration_suite
Source: NVD CPE · affected
Version / affected range: 9.0.0
cpe:2.3:a:synacor:zimbra_collaboration_suite:9.0.0:p26:*:*:*:*:*:* - synacor / zimbra_collaboration_suite
Source: NVD CPE · affected
Version / affected range: 9.0.0
cpe:2.3:a:synacor:zimbra_collaboration_suite:9.0.0:p27:*:*:*:*:*:* - synacor / zimbra_collaboration_suite
Source: NVD CPE · affected
Version / affected range: 9.0.0
cpe:2.3:a:synacor:zimbra_collaboration_suite:9.0.0:p28:*:*:*:*:*:* - synacor / zimbra_collaboration_suite
Source: NVD CPE · affected
Version / affected range: 9.0.0
cpe:2.3:a:synacor:zimbra_collaboration_suite:9.0.0:p29:*:*:*:*:*:* - synacor / zimbra_collaboration_suite
Source: NVD CPE · affected
Version / affected range: 9.0.0
cpe:2.3:a:synacor:zimbra_collaboration_suite:9.0.0:p3:*:*:*:*:*:* - synacor / zimbra_collaboration_suite
Source: NVD CPE · affected
Version / affected range: 9.0.0
cpe:2.3:a:synacor:zimbra_collaboration_suite:9.0.0:p30:*:*:*:*:*:* - synacor / zimbra_collaboration_suite
Source: NVD CPE · affected
Version / affected range: 9.0.0
cpe:2.3:a:synacor:zimbra_collaboration_suite:9.0.0:p31:*:*:*:*:*:* - synacor / zimbra_collaboration_suite
Source: NVD CPE · affected
Version / affected range: 9.0.0
cpe:2.3:a:synacor:zimbra_collaboration_suite:9.0.0:p32:*:*:*:*:*:* - synacor / zimbra_collaboration_suite
Source: NVD CPE · affected
Version / affected range: 9.0.0
cpe:2.3:a:synacor:zimbra_collaboration_suite:9.0.0:p33:*:*:*:*:*:* - synacor / zimbra_collaboration_suite
Source: NVD CPE · affected
Version / affected range: 9.0.0
cpe:2.3:a:synacor:zimbra_collaboration_suite:9.0.0:p34:*:*:*:*:*:* - synacor / zimbra_collaboration_suite
Source: NVD CPE · affected
Version / affected range: 9.0.0
cpe:2.3:a:synacor:zimbra_collaboration_suite:9.0.0:p35:*:*:*:*:*:* - synacor / zimbra_collaboration_suite
Source: NVD CPE · affected
Version / affected range: 9.0.0
cpe:2.3:a:synacor:zimbra_collaboration_suite:9.0.0:p36:*:*:*:*:*:* - synacor / zimbra_collaboration_suite
Source: NVD CPE · affected
Version / affected range: 9.0.0
cpe:2.3:a:synacor:zimbra_collaboration_suite:9.0.0:p37:*:*:*:*:*:* - synacor / zimbra_collaboration_suite
Source: NVD CPE · affected
Version / affected range: 9.0.0
cpe:2.3:a:synacor:zimbra_collaboration_suite:9.0.0:p38:*:*:*:*:*:* - synacor / zimbra_collaboration_suite
Source: NVD CPE · affected
Version / affected range: 9.0.0
cpe:2.3:a:synacor:zimbra_collaboration_suite:9.0.0:p39:*:*:*:*:*:* - synacor / zimbra_collaboration_suite
Source: NVD CPE · affected
Version / affected range: 9.0.0
cpe:2.3:a:synacor:zimbra_collaboration_suite:9.0.0:p4:*:*:*:*:*:* - synacor / zimbra_collaboration_suite
Source: NVD CPE · affected
Version / affected range: 9.0.0
cpe:2.3:a:synacor:zimbra_collaboration_suite:9.0.0:p40:*:*:*:*:*:* - synacor / zimbra_collaboration_suite
Source: NVD CPE · affected
Version / affected range: 9.0.0
cpe:2.3:a:synacor:zimbra_collaboration_suite:9.0.0:p41:*:*:*:*:*:* - synacor / zimbra_collaboration_suite
Source: NVD CPE · affected
Version / affected range: 9.0.0
cpe:2.3:a:synacor:zimbra_collaboration_suite:9.0.0:p42:*:*:*:*:*:* - synacor / zimbra_collaboration_suite
Source: NVD CPE · affected
Version / affected range: 9.0.0
cpe:2.3:a:synacor:zimbra_collaboration_suite:9.0.0:p5:*:*:*:*:*:* - synacor / zimbra_collaboration_suite
Source: NVD CPE · affected
Version / affected range: 9.0.0
cpe:2.3:a:synacor:zimbra_collaboration_suite:9.0.0:p6:*:*:*:*:*:* - synacor / zimbra_collaboration_suite
Source: NVD CPE · affected
Version / affected range: 9.0.0
cpe:2.3:a:synacor:zimbra_collaboration_suite:9.0.0:p7:*:*:*:*:*:* - synacor / zimbra_collaboration_suite
Source: NVD CPE · affected
Version / affected range: 9.0.0
cpe:2.3:a:synacor:zimbra_collaboration_suite:9.0.0:p8:*:*:*:*:*:* - synacor / zimbra_collaboration_suite
Source: NVD CPE · affected
Version / affected range: 9.0.0
cpe:2.3:a:synacor:zimbra_collaboration_suite:9.0.0:p9:*:*:*:*:*:*
References
Sources: NVD · FIRST EPSS · CISA KEV
Latest successful provider update; providers refresh independently.
Reported Context (1)
- vulnerable to ongoing attacks exploiting another cross-site scripting (XSS) security flaw (tracked as CVE-2025-48700). Zimbra patches critical stored XSS flaw in Classic Web Client
CVE (1)
Threat Actors (5)
Vendors (1)
Products (2)
Industries (1)
Countries (1)
Note: Related entities, including threat actors, malware, CVEs, MITRE ATT&CK techniques, vendors, products, tools, countries, and industries, are shown when they appear in the same reporting. Their presence does not necessarily mean they were targeted, compromised, vulnerable, responsible for the activity, or directly involved in the incident.