Buffer overflow in IIS 4.0 allows remote attackers to cause a denial of service via a…
Priority HIGH 81CWE-119Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- Complete · Complete · Complete
- Fix status
- No fix listed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA. Impact type from CWE-119 and the CVSS impact.
Summary
Buffer overflow in IIS 4.0 allows remote attackers to cause a denial of service via a malformed request for files with .HTR, .IDC, or .STM extensions.
Why it matters now
EPSS 0.74651 99th 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 · 4
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:microsoft:internet_information_server:4.0:*:*:*:*:*:*:* | 4.0 | Vulnerable | Microsoft |
| cpe:2.3:o:microsoft:windows_2000:*:*:*:*:*:*:*:* | all versions | Vulnerable | Microsoft |
| cpe:2.3:o:microsoft:windows_nt:*:*:*:*:*:*:*:* | all versions | Vulnerable | Microsoft |
| cpe:2.3:o:microsoft:windows_nt:4.0:*:*:*:*:*:*:* | 4.0 | Vulnerable | Microsoft |
- cpe:2.3:a:microsoft:internet_information_server:4.0:*:*:*:*:*:*:* Versions 4.0 Vulnerable ·Microsoft
- cpe:2.3:o:microsoft:windows_2000:*:*:*:*:*:*:*:* Versions all versions Vulnerable ·Microsoft
- cpe:2.3:o:microsoft:windows_nt:*:*:*:*:*:*:*:* Versions all versions Vulnerable ·Microsoft
- cpe:2.3:o:microsoft:windows_nt:4.0:*:*:*:*:*:*:* Versions 4.0 Vulnerable ·Microsoft
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-1999-0874
- 2026-10-03 Alias added: GHSA-5c7g-wprj-cxg3
References
Advisory 4
Other 1
More Microsoft Internet Information Server vulnerabilities
- TI-2001-00492 Buffer overflow in ISAPI extension (idq.dll) in Index Server 2.0 and Indexing Service… CVSS 2.0HIGH 10.0
- TI-2009-02880 Buffer overflow in the FTP Service in Microsoft Internet Information Services (IIS) 5.0… CVSS 2.0HIGH 9.0
- TI-1999-00961 The Remote Data Service (RDS) DataFactory component of Microsoft Data Access Components… CVSS 2.0HIGH 10.0
- TI-2008-00066 Unspecified vulnerability in Microsoft Internet Information Services (IIS) 5.1 through… CVSS 2.0HIGH 10.0
- TI-2001-00331 Directory traversal vulnerability in IIS 5.0 and earlier allows remote attackers to… CVSS 2.0HIGH 7.5
- TI-2002-00075 Buffer overflow in the chunked encoding transfer mechanism in Internet Information Server… CVSS 2.0HIGH 7.5
Sources
- CVE-1999-0874 · CVE Program
- CVE-1999-0874 · NVD
- FIRST EPSS
- GHSA-5c7g-wprj-cxg3 · GitHub Advisory Database · CC BY 4.0
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