CVE-2009-0209

PI Server in OSIsoft PI System before 3.4.380.x does not properly use encryption in the default authentication process, which allows remote attackers to read or modify information in databases via unspecified vectors.

Published: 2009-10-01 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2009-0209 is rated Moderate Risk (42.6/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.67%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2009-0209

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 0.14% 0.67% +0.53%
2 2025-03-30 0.17% 0.14% -0.03%
3 2025-03-29 — 0.17% —

Full EPSS history (6 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2009-0209

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
6.4 2.0 MEDIUM
AV:N/AC:L/Au:N/C:P/I:P/A:N Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:N)
No availability impact.
 10.0 4.9 [email protected]

Weakness enumeration for CVE-2009-0209

Affected software / configurations for CVE-2009-0209

Vendor Product Version Raw CPE
osisoft pi_server <= 3.4.375.99 cpe:2.3:a:osisoft:pi_server:*:sp2:32bit_windows:*:*:*:*:*
osisoft pi_server 2.4 cpe:2.3:a:osisoft:pi_server:2.4:*:*:*:*:*:*:*
osisoft pi_server 2.6 cpe:2.3:a:osisoft:pi_server:2.6:*:*:*:*:*:*:*
osisoft pi_server 3.4.363.97 cpe:2.3:a:osisoft:pi_server:3.4.363.97:*:*:*:*:*:*:*
osisoft pi_server 3.4.370 cpe:2.3:a:osisoft:pi_server:3.4.370:*:*:*:*:*:*:*
osisoft pi_server 3.4.375.99 cpe:2.3:a:osisoft:pi_server:3.4.375.99:sp2:64bit_windows:*:*:*:*:*

References for CVE-2009-0209

cvelogic Threat Intelligence