CVE-2009-3675

LSASS.exe in the Local Security Authority Subsystem Service (LSASS) in Microsoft Windows 2000 SP4, XP SP2 and SP3, and Server 2003 SP2 allows remote authenticated users to cause a denial of service (CPU consumption) via a malformed ISAKMP request over IPsec, aka "Local Security Authority Subsystem Service Resource Exhaustion Vulnerability."

Published: 2009-12-09 Last update: 2026-04-23 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2009-3675 is rated Moderate Risk (56.4/100): CVSS Medium severity, with high exploitation likelihood (EPSS 24.70%, 98th percentile). EPSS ranks this CVE among the most likely to be exploited in the near term. High exploitation likelihood—assess exposure and prioritize 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-2009-3675

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 42.88% 24.70% -18.18%
2 2026-04-30 45.40% 42.88% -2.52%
3 2025-12-28 — 45.40% —

Full EPSS history (25 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2009-3675

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
6.8 2.0 MEDIUM
AV:N/AC:L/Au:S/C:N/I:N/A:C 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:S)
A single authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:C)
Complete availability impact.
 8.0 6.9 [email protected]

Weakness enumeration for CVE-2009-3675

Affected software / configurations for CVE-2009-3675

Vendor Product Version Raw CPE
microsoft windows_2000 sp4 cpe:2.3:o:microsoft:windows_2000:sp4:*:*:*:*:*:*:*
microsoft windows_2003_server — cpe:2.3:o:microsoft:windows_2003_server:*:sp2:*:*:*:*:*:*
microsoft windows_2003_server — cpe:2.3:o:microsoft:windows_2003_server:-:sp2:itanium:*:*:*:*:*
microsoft windows_2003_server — cpe:2.3:o:microsoft:windows_2003_server:-:sp2:x64:*:*:*:*:*
microsoft windows_xp — cpe:2.3:o:microsoft:windows_xp:*:sp2:x64:*:*:*:*:*
microsoft windows_xp — cpe:2.3:o:microsoft:windows_xp:*:sp3:*:*:*:*:*:*
microsoft windows_xp — cpe:2.3:o:microsoft:windows_xp:-:*:*:*:*:*:*:*

References for CVE-2009-3675

cvelogic Threat Intelligence