SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2002-0147

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."

HIGH 7.5EPSS 68.0%

Does this matter?

EPSS puts the probability of exploitation in the next 30 days at 68.0%, higher than 99% of all known CVEs. Patch or mitigate before the next change window.

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."

CVSS 2.0
7.5 HIGHAV:N/AC:L/Au:N/C:P/I:P/A:P
EPSS
68.02% probability · 99th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Affected
microsoft/internet information server · microsoft/internet information services
Source
cve@mitre.org
EPSS trend
0%35%70%22 October 2026: 68.02%26 October 2026: 68.02%22 October 202626 October 2026

EPSS moved from 68.0% on 22 October 2026 to 68.0% on 26 October 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.