In Zimbra Collaboration (ZCS) 9.0 through 10.1, a Cross-Site Request Forgery (CSRF) vulnerability exists in the GraphQL endpoint (/service/extension/graphql) of Zimbra webmail due to a lack of CSRF token validation. This allows attackers to perform unauthorized GraphQL operations, such as modifying contacts, changing account settings, and accessing sensitive user data when an authenticated user visits a malicious website.
Conclusion & alert: CVE-2025-32354 is rated Moderate Risk (41.4/100): CVSS High severity, with low exploitation likelihood (EPSS 0.27%). Mandatory action: Review affected assets and schedule remediation.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2026-06-15 | 0.38% | 0.27% | -0.11% |
| 2 | 2026-06-07 | 0.24% | 0.38% | +0.14% |
| 3 | 2026-06-06 | — | 0.24% | — |
Full EPSS history (5 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 8.8 | 3.1 | HIGH |
|
2.8 | 5.9 | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| synacor | zimbra_collaboration_suite | >= 9.0.0, < 10.1.4 | cpe:2.3:a:synacor:zimbra_collaboration_suite:*:*:*:*:*:*:*:* |
| URL | Tags |
|---|---|
| https://wiki.zimbra.com/wiki/Security_Center | Vendor Advisory |
| https://wiki.zimbra.com/wiki/Zimbra_Releases/10.1.4#Security_Fixes | Release Notes |
| https://wiki.zimbra.com/wiki/Zimbra_Responsible_Disclosure_Policy | Product |