Windows Server 2003 vulnerabilitiesAnd the versions its exploited flaws hit.
Windows Server 2003 is made by Microsoft. We track 653 published vulnerabilities in it, across 7 versions. 33 of them are on the list of flaws known to be exploited, the newest added on 20 May 2026. If you run Windows Server 2003, check your version against the exploited flaws below and patch those first.
The most recent Windows Server 2003 flaw added to the known-exploited list is CVE-2010-0806, on 20 May 2026. We keep watching the known-exploited list.
Which versions of Windows Server 2003 do the exploited flaws hit?
Each exploited flaw lists the versions it affects, as published by the vendor. Find your version, then patch.
- CVE-2009-1537Exploited list, 20 May 2026
Microsoft DirectX NULL Byte Overwrite Vulnerability
all versions - CVE-2012-4792Exploited list, 23 Jul 2024
Microsoft Internet Explorer Use-After-Free Vulnerability
all versions - CVE-2012-0151Exploited list, 8 Jun 2022
Microsoft Windows Authenticode Signature Verification Remote Code Execution Vulnerability
all versions - CVE-2015-2360Exploited list, 25 May 2022
Microsoft Win32k Privilege Escalation Vulnerability
r2-sp2
26 more exploited flaws name Windows Server 2003 without a version of its own, for example as the system other affected software runs on. They are in the list below.
Showing the 30 most recently added of 33 exploited flaws. The full list is below.
Which Windows Server 2003 vulnerabilities are being exploited?
33 flaws are on the government list of vulnerabilities known to be exploited. These are the ones criminals are using now, so they go first, whatever their severity score says.
- 8.8Microsoft Internet Explorer Use-After-Free Vulnerability
Microsoft Internet Explorer contains an use-after-free vulnerability that could allow remote attackers to execute arbitrary code via vectors involving access to an invalid pointer after the deletion of an object.
- 9.8Microsoft Windows Buffer Overflow Vulnerability
Microsoft Windows contains a buffer overflow vulnerability in the Windows Server Service that allows remote attackers to execute arbitrary code via a crafted RPC request that triggers an overflow during path...
- 8.8Microsoft DirectX NULL Byte Overwrite Vulnerability
Microsoft DirectX contains a NULL byte overwrite vulnerability in the QuickTime Movie Parser Filter in quartz.dll in DirectShow which could allow remote attackers to execute arbitrary code via a crafted QuickTime...
- 8.8Microsoft Internet Explorer Use-After-Free Vulnerability
Microsoft Internet Explorer contains an use-after-free vulnerability that could allow remote attackers to execute arbitrary code by accessing a pointer associated with a deleted object.
- 8.8Microsoft Windows Remote Code Execution Vulnerability
Microsoft Windows Kernel contains an unspecified vulnerability in the TrueType font parsing engine in win32k.sys in the kernel-mode drivers that allows remote attackers to execute arbitrary code via crafted font data...
- 8.8Microsoft Windows Out-of-Bounds Write Vulnerability
Microsoft Windows contains an out-of-bounds write vulnerability in the InformationCardSigninHelper Class ActiveX control, icardie.dll.
- 9.3Microsoft Internet Explorer Uninitialized Memory Corruption Vulnerability
Microsoft Internet Explorer contains an uninitialized memory corruption vulnerability that could allow for remote code execution.
- 8.8Microsoft Internet Explorer Use-After-Free Vulnerability
Microsoft Internet Explorer contains a use-after-free vulnerability that allows a remote attacker to execute arbitrary code via a crafted web site that triggers access to an object that (1) was not properly allocated...
Which Windows Server 2003 flaws are most likely to be used?
Ranked by the latest exploit-likelihood forecast: the chance each flaw is used in an attack in the next 30 days. A high severity score on its own doesn't tell you that. Flaws shared by many other makers' products are left out.
- >99%
Apache Struts 2.0.0 through 2.3.15 allows remote attackers to execute arbitrary OGNL expressions via a parameter with a crafted (1) action:, (2) redirect:, or (3) redirectAction: prefix.
- >99%
Buffer overflow in the ScStoragePathFromUrl function in the WebDAV service in Internet Information Services (IIS) 6.0 in Microsoft Windows Server 2003 R2 allows remote attackers to execute arbitrary code via a long...
- 98%CVE-2009-1535High
The WebDAV extension in Microsoft Internet Information Services (IIS) 5.1 and 6.0 allows remote attackers to bypass URI-based protection mechanisms, and list folders or read, create, or modify files, via a %c0%af...
- 97%CVE-2015-0014Critical
Buffer overflow in the Telnet service in Microsoft Windows Server 2003 SP2, Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8, Windows 8.1, and Windows Server 2012 Gold and R2 allows...
- 97%
Use-after-free vulnerability in Microsoft Internet Explorer 6, 7, and 8 allows remote attackers to execute arbitrary code via vectors related to Cascading Style Sheets (CSS) token sequences and the clip attribute,...
- 96%CVE-2014-6321Critical
Schannel in Microsoft Windows Server 2003 SP2, Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8, Windows 8.1, Windows Server 2012 Gold and R2, and Windows RT Gold and 8.1 allows remote...
- 95%
OleAut32.dll in OLE in Microsoft Windows Server 2003 SP2, Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8, Windows 8.1, Windows Server 2012 Gold and R2, and Windows RT Gold and 8.1...
Running Windows Server 2003? We'll keep checking.
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1 flaw being exploited affects software Acme tracks
Microsoft Internet Explorer contains an use-after-free vulnerability that could allow remote attackers to execute arbitrary code via vectors involving access to an invalid pointer after the deletion of an object. The impacted product could be end-of-life (EoL) and/or end-of-service (EoS). Users should discontinue product utilization.
- Matched to
- Windows Server 2003 on Acme's software list
- What to do
- Patch first, then check for signs of use
Sent to the alert recipients Acme chose. Also in the app and to Acme's webhook.
We track 653 published vulnerabilities listed under the name Windows Server 2003, across 7 versions. The most recent Windows Server 2003 flaw added to the known-exploited list is CVE-2010-0806, on 20 May 2026.
33 are on the list of flaws known to be exploited. The most recently added are CVE-2010-0806, CVE-2008-4250 and CVE-2009-1537.
Each flaw names its own versions, usually as ranges. The newest, CVE-2009-1537, affects all versions. The versions for every exploited flaw are listed on this page.
Create a Precursor Intelligence account and track Windows Server 2003. We match it against every published flaw, give each one a risk score from 0 to 100 and keep watching, so you hear about new ones as soon as we know, by email, in the app or by webhook.