provider/server/ECServer.cpp in Zarafa Collaboration Platform (ZCP) before 7.1.13 and 7.2.x before 7.2.1 allows local users to write to arbitrary files via a symlink attack on /tmp/zarafa-upgrade-lock.
Conclusion & alert: CVE-2015-3436 is rated Low Risk (37.5/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.39%). Mandatory action: Monitor for updates and reassess as exploit intelligence or EPSS changes.
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 | 0.04% | 0.39% | +0.35% |
| 2 | 2025-05-21 | 0.14% | 0.04% | -0.10% |
| 3 | 2025-03-17 | — | 0.14% | — |
Full EPSS history (5 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 6.6 | 2.0 | MEDIUM |
|
3.9 | 9.2 | [email protected] |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| zarafa | zarafa_collaboration_platform | <= 7.1.12 | cpe:2.3:a:zarafa:zarafa_collaboration_platform:*:*:*:*:*:*:*:* |
| zarafa | zarafa_collaboration_platform | 7.2.0 | cpe:2.3:a:zarafa:zarafa_collaboration_platform:7.2.0:*:*:*:*:*:*:* |