Vulnerability Analysis
CVE-2025-66376
Zimbra 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 directives in an HTML e-mail message.
CISA KEV
CVSS Base Score
7.2
HIGH
Exploitability:3.9
Impact Score:2.8
Temporal Score:-
EPSS:12.01%
Threat Intelligence Signals
CISA KEV
YES
KEV Date Added
2026-03-18
Ransomware Use
Unknown
KEV Due Date
2026-04-01
VulnCheck In-the-Wild
No
Nuclei Template
No
EPSS Score
12.009%
EPSS Percentile
95.6th pct
GHSA ID
GitHub Severity
HIGH
SSVC Exploitation
—
SSVC Automatable
—
Vulnerability Class
—
Identity & Timeline
| Status | - |
| Assigning Authority | - |
| CVSS Version / Source | - |
| Reserved | - |
| Published | - |
| Patch Date (date_public) | - |
| Exploit DB Date | - |
| First GitHub PoC Date | - |
| Last Updated | - |
| Time to Patch (Days to fix) | - |
| Exploit Release Gap | - |
| PoC Release Gap | - |
| Exploit DB References | None identified |
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| No affected products specified. | ||
Social Buzz