SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2009-0568

The RPC Marshalling Engine (aka NDR) in Microsoft Windows 2000 SP4, XP SP2 and SP3, Server 2003 SP2, Vista Gold, SP1, and SP2, and Server 2008 SP2 does not properly maintain its internal state, which allows remote attackers to overwrite arbitrary memory…

HIGH 10.0EPSS 32.4%

Does this matter?

EPSS puts the probability of exploitation in the next 30 days at 32.4%, higher than 98% of all known CVEs. Patch or mitigate before the next change window.

Description

The RPC Marshalling Engine (aka NDR) in Microsoft Windows 2000 SP4, XP SP2 and SP3, Server 2003 SP2, Vista Gold, SP1, and SP2, and Server 2008 SP2 does not properly maintain its internal state, which allows remote attackers to overwrite arbitrary memory locations via a crafted RPC message that triggers incorrect pointer reading, related to "IDL interfaces containing a non-conformant varying array" and FC_SMVARRAY, FC_LGVARRAY, FC_VARIABLE_REPEAT, and FC_VARIABLE_OFFSET, aka "RPC Marshalling Engine Vulnerability."

CVSS 2.0
10.0 HIGHAV:N/AC:L/Au:N/C:C/I:C/A:C
EPSS
32.39% probability · 98th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-264
Affected
microsoft/windows 2000 · microsoft/windows 2003 server · microsoft/windows server · microsoft/windows server 2008 · microsoft/windows vista · microsoft/windows xp
Source
secure@microsoft.com
EPSS trend
0%18%35%26 October 2026: 32.39%26 October 202626 October 2026

EPSS 32.4% since 26 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.