← Vulnerability feed

Vulnerability record · CVE-2003-0819 · published 17 February 2004

CVE-2003-0819: Microsoft proxy server memory buffer overflow vulnerability

Microsoft · Proxy Server

Buffer overflow in the H.323 filter of Microsoft Internet Security and Acceleration Server 2000 allows remote attackers to execute arbitrary code in the Microsoft Firewall Service via certain H.323 traffic, as demonstrated by the NISCC/OUSPG PROTOS test suite for the H.225 protocol.

10.0 CVSS 2.0 High EPSS 41% · top 1.4% CWE-119 · Memory buffer overflow
10.0CVSS 2.0 base score
41%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
18References
16 Jun 2026Last modified by NVD

Description

Buffer overflow in the H.323 filter of Microsoft Internet Security and Acceleration Server 2000 allows remote attackers to execute arbitrary code in the Microsoft Firewall Service via certain H.323 traffic, as demonstrated by the NISCC/OUSPG PROTOS test suite for the H.225 protocol.

AV:N/AC:L/Au:N/C:C/I:C/A:C

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://secunia.com/advisories/10611
http://www.cert.org/advisories/CA-2004-01.html PatchThird Party AdvisoryUS Government Resource
http://www.kb.cert.org/vuls/id/749342 PatchThird Party AdvisoryUS Government Resource
http://www.securityfocus.com/bid/9406
http://www.securityfocus.com/bid/9408 PatchVendor Advisory
http://www.securitytracker.com/id?1008698
http://www.uniras.gov.uk/vuls/2004/006489/h323.htm
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2004/ms04-001
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A478
http://secunia.com/advisories/10611
http://www.cert.org/advisories/CA-2004-01.html PatchThird Party AdvisoryUS Government Resource
http://www.kb.cert.org/vuls/id/749342 PatchThird Party AdvisoryUS Government Resource
http://www.securityfocus.com/bid/9406
http://www.securityfocus.com/bid/9408 PatchVendor Advisory
http://www.securitytracker.com/id?1008698
http://www.uniras.gov.uk/vuls/2004/006489/h323.htm
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2004/ms04-001
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A478

Track CVE-2003-0819 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

7.5CVE-2004-0892Microsoft isa server vulnerabilityMicrosoft Proxy Server 2.0 and Microsoft ISA Server 2000 (which is included in Small Business Server 2000 and Small Business Server 2003 Premium Edit…EPSS 17%7.5CVE-2002-0371Microsoft IE and Proxy/ISA Server gopher client buffer overflowThe gopher client in Microsoft Internet Explorer 5.1 through 6.0, Proxy Server 2.0, and ISA Server 2000 contains a buffer overflow triggered by a lon…EPSS 54%analysed5.0CVE-2003-0110Microsoft isa server vulnerabilityThe Winsock Proxy service in Microsoft Proxy Server 2.0 and the Microsoft Firewall service in Internet Security and Acceleration (ISA) Server 2000 al…EPSS 18%5.0CVE-2000-0246IIS ISAPI processing on UNC-mapped virtual directories exposes source codeIIS 4.0 and 5.0 fails to properly perform ISAPI extension processing when a virtual directory is mapped to a UNC share. This causes ASP and other sou…EPSS 80%analysed9.5CVE-2026-88772Citrix netscaler application delivery controller memory buffer overflow vulnerabilityVulnerability in Citrix NetScaler ADC and Citrix NetScaler Gateway. This issue affects ADC: before 14.1-73.37, before 13.1-64.23, before 14.1-73.37 F…KEVEPSS 1.2%8.8CVE-2026-8452Citrix NetScaler ADC and Gateway memory buffer overflow causes DoSCVE-2026-8452 is a memory buffer overflow (CWE-119) in Citrix NetScaler ADC and NetScaler Gateway that leads to unpredictable or erroneous behavior a…KEVEPSS 1.0%analysed8.8CVE-2009-3459Adobe Reader and Acrobat heap buffer overflow via crafted PDFAdobe Reader and Acrobat 7.x before 7.1.4, 8.x before 8.1.7, and 9.x before 9.2 contain a heap-based buffer overflow (CWE-122) triggered by a crafted…KEVEPSS 87%analysed9.8CVE-2008-4250Microsoft Windows Server service RPC path canonicalization buffer overflowThe Server service in multiple Windows versions fails to properly handle path canonicalization, allowing a crafted RPC request to overflow a buffer a…KEVEPSS 99%analysed

Source: NIST National Vulnerability Database (record CVE-2003-0819), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.