Nagios Log Server versions prior to 2024R2.0.2 contain a vulnerability in the AD/LDAP user import functionality as it fails to obfuscate the password field during import. As a result, the plaintext password supplied for imported accounts may be exposed in the user interface, logs, or other diagnostic output. This can leak sensitive credentials to administrators or anyone with access to import results.
Conclusion & alert: CVE-2025-34270 is rated Moderate Risk (42.7/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.57%). 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 | 2026-06-27 | 0.51% | 0.57% | +0.06% |
| 2 | 2026-06-15 | 0.08% | 0.51% | +0.43% |
| 3 | 2025-11-07 | — | 0.08% | — |
Full EPSS history (5 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 6.9 | 4.0 | MEDIUM |
|
— | — | [email protected] |
| 4.9 | 3.1 | MEDIUM |
|
1.2 | 3.6 | [email protected] |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| nagios | log_server | < 2024 | cpe:2.3:a:nagios:log_server:*:*:*:*:*:*:*:* |
| nagios | log_server | 2024 | cpe:2.3:a:nagios:log_server:2024:r1:*:*:*:*:*:* |
| nagios | log_server | 2024 | cpe:2.3:a:nagios:log_server:2024:r1.0.1:*:*:*:*:*:* |
| nagios | log_server | 2024 | cpe:2.3:a:nagios:log_server:2024:r1.0.2:*:*:*:*:*:* |
| nagios | log_server | 2024 | cpe:2.3:a:nagios:log_server:2024:r1.1:*:*:*:*:*:* |
| nagios | log_server | 2024 | cpe:2.3:a:nagios:log_server:2024:r1.2:*:*:*:*:*:* |
| nagios | log_server | 2024 | cpe:2.3:a:nagios:log_server:2024:r1.3:*:*:*:*:*:* |
| nagios | log_server | 2024 | cpe:2.3:a:nagios:log_server:2024:r1.3.1:*:*:*:*:*:* |
| nagios | log_server | 2024 | cpe:2.3:a:nagios:log_server:2024:r1.3.2:*:*:*:*:*:* |
| nagios | log_server | 2024 | cpe:2.3:a:nagios:log_server:2024:r1.3.3:*:*:*:*:*:* |
| nagios | log_server | 2024 | cpe:2.3:a:nagios:log_server:2024:r1.3.4:*:*:*:*:*:* |
| nagios | log_server | 2024 | cpe:2.3:a:nagios:log_server:2024:r1.3.5:*:*:*:*:*:* |
| nagios | log_server | 2024 | cpe:2.3:a:nagios:log_server:2024:r2:*:*:*:*:*:* |
| nagios | log_server | 2024 | cpe:2.3:a:nagios:log_server:2024:r2.0.1:*:*:*:*:*:* |
| URL | Tags |
|---|---|
| https://support.nagios.com/kb/article/authenticating-and-importing-users-with-ad-and-ldap-995.html | Not Applicable |
| https://www.nagios.com/changelog/#log-server | Release Notes |
| https://www.nagios.com/products/security/#log-server-2024R2 | Vendor Advisory |
| https://www.vulncheck.com/advisories/nagios-log-server-ad-ldap-import-password-not-obfuscated | Third Party Advisory |