The Winsock Proxy service in Microsoft Proxy Server 2.0 and the Microsoft Firewall…
Priority MEDIUM 40Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · Partial
- Fix status
- No fix listed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA.
Summary
The Winsock Proxy service in Microsoft Proxy Server 2.0 and the Microsoft Firewall service in Internet Security and Acceleration (ISA) Server 2000 allow remote attackers to cause a denial of service (CPU consumption or packet storm) via a spoofed, malformed packet to UDP port 1745.
Why it matters now
EPSS 0.17966 97th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 5
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:microsoft:isa_server:2000:*:*:*:*:*:*:* | 2000 | Vulnerable | Microsoft |
| cpe:2.3:a:microsoft:isa_server:2000:fp1:*:*:*:*:*:* | 2000 fp1 | Vulnerable | Microsoft |
| cpe:2.3:a:microsoft:isa_server:2000:sp1:*:*:*:*:*:* | 2000 sp1 | Vulnerable | Microsoft |
| cpe:2.3:a:microsoft:proxy_server:2.0:*:*:*:*:*:*:* | 2.0 | Vulnerable | Microsoft |
| cpe:2.3:a:microsoft:proxy_server:2.0:sp1:*:*:*:*:*:* | 2.0 sp1 | Vulnerable | Microsoft |
- cpe:2.3:a:microsoft:isa_server:2000:*:*:*:*:*:*:* Versions 2000 Vulnerable ·Microsoft
- cpe:2.3:a:microsoft:isa_server:2000:fp1:*:*:*:*:*:* Versions 2000 fp1 Vulnerable ·Microsoft
- cpe:2.3:a:microsoft:isa_server:2000:sp1:*:*:*:*:*:* Versions 2000 sp1 Vulnerable ·Microsoft
- cpe:2.3:a:microsoft:proxy_server:2.0:*:*:*:*:*:*:* Versions 2.0 Vulnerable ·Microsoft
- cpe:2.3:a:microsoft:proxy_server:2.0:sp1:*:*:*:*:*:* Versions 2.0 sp1 Vulnerable ·Microsoft
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2003-0110
- 2026-10-03 Alias added: GHSA-rj9f-x466-2vr9
References
More Microsoft Isa Server vulnerabilities
- TI-2009-01078 The Microsoft Office Web Components Spreadsheet ActiveX control (aka OWC10 or OWC11), as… CVSS 2.0HIGH 9.3
- TI-2009-01455 Buffer overflow in the Office Web Components ActiveX Control in Microsoft Office XP SP3… CVSS 2.0HIGH 9.3
- TI-2002-00358 Buffer overflow in gopher client for Microsoft Internet Explorer 5.1 through 6.0, Proxy… CVSS 2.0HIGH 7.5
- TI-2009-00541 The Office Web Components ActiveX Control in Microsoft Office XP SP3, Office 2003 SP3… CVSS 2.0HIGH 9.3
- TI-2009-01077 Microsoft Internet Security and Acceleration (ISA) Server 2006 Gold and SP1, when Radius… CVSS 2.0HIGH 9.0
- TI-2006-06769 Microsoft Internet Security and Acceleration (ISA) Server 2004 logs unusual ASCII… CVSS 2.0HIGH 10.0
Sources
- CVE-2003-0110 · CVE Program
- CVE-2003-0110 · NVD
- FIRST EPSS
- GHSA-rj9f-x466-2vr9 · GitHub Advisory Database · CC BY 4.0
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