A directory traversal vulnerability in Safe Software FME Server before 2022.2.5 allows an attacker to bypass validation when editing a network-based resource connection, resulting in the unauthorized reading and writing of arbitrary files. Successful exploitation requires an attacker to have access to a user account with write privileges. FME Flow 2023.0 is also a fixed version.
Conclusion & alert: CVE-2023-35801 is rated Moderate Risk (57.3/100): CVSS High severity, with medium exploitation likelihood (EPSS 1.46%). 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 | 2026-06-24 | 1.17% | 1.46% | +0.30% |
| 2 | 2026-06-15 | 0.36% | 1.17% | +0.80% |
| 3 | 2026-03-18 | — | 0.36% | — |
Full EPSS history (14 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 8.1 | 3.1 | HIGH |
|
2.8 | 5.2 | [email protected] |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| safe | fme_server | < 2022.2.5 | cpe:2.3:a:safe:fme_server:*:*:*:*:*:*:*:* |
| URL | Tags |
|---|---|
| https://community.safe.com/s/ | Product |
| https://community.safe.com/s/article/Known-Issue-FME-Flow-Directory-Traversal-Vulnerability | Mitigation Vendor Advisory |
| https://downloads.safe.com/fme/2023/whatsnew_server_2023_0_0_3.txt | Release Notes |