CVE-2002-0147
HighBuffer overflow in the ASP data transfer mechanism in Internet Information Server (IIS) 4.0, 5.0, and 5.1 allows remote attackers to cause a denial of service or execute code, aka "Microsoft-discovered variant of Chunked Encoding buffer overrun."
Published Apr 22, 2002 · Updated Apr 15, 2026
Key Facts
Patch immediately- CVE-2002-0147 is a high-severity vulnerability (CVSS 7.5 v2) affecting Internet Information Server (Microsoft), Internet Information Services (Microsoft).
- It is not listed in any known-exploited vulnerabilities catalog. No public exploit code is known.
- EPSS estimates a 62% probability of exploitation in the next 30 days.
- No fixed version is listed yet; check the vendor advisory for mitigations.
- Brandefense priority: patch immediately, because it is very likely to be exploited soon.
CVSS v2
7.5
AV:N/AC:L/Au:N/C:P/I:P/A:P
EPSS (30-day exploit likelihood)
62%
Higher than 99.1% of all scored CVEs
Exploited in the wild
No known
Not in a known-exploited catalog
Public exploit code
None known
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Description
Buffer overflow in the ASP data transfer mechanism in Internet Information Server (IIS) 4.0, 5.0, and 5.1 allows remote attackers to cause a denial of service or execute code, aka "Microsoft-discovered variant of Chunked Encoding buffer overrun."
Affected Products
2 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| Internet Information ServerMicrosoft | 4.0 | n/a |
| Internet Information ServicesMicrosoft | 5.0 | n/a |
Timeline
Publicly disclosed
Apr 22, 2002
Last updated
Apr 15, 2026
References
- otherMS02-018
- otheroval:org.mitre.oval:def:22
- otheroval:org.mitre.oval:def:72
- otherCA-2002-09
- other20020415 Microsoft IIS Vulnerabilities in Cisco Products - MS02-018
FAQ
Common Questions.
Buffer overflow in the ASP data transfer mechanism in Internet Information Server (IIS) 4.0, 5.0, and 5.1 allows remote attackers to cause a denial of service or execute code, aka "Microsoft-discovered variant of Chunked Encoding buffer overrun."
Affected: Internet Information Server (Microsoft) versions 4.0; Internet Information Services (Microsoft) versions 5.0. The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
No public exploit code is known.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.
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