CVE-1999-0867 json
Denial of service in IIS 4.0 via a flood of HTTP requests with malformed headers.
published 1999-08-11 27 y ago modified 2026-06-16 4 mo ago also EUVD-1999-0848
- cvss
- 5.0
- version 2.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 21.5%
- EPSS 21.5% chance of exploitation in 30 days, percentile 97%
- public exploits
- 1
- Exploit-DB
Summary
Denial of service in IIS 4.0 via a flood of HTTP requests with malformed headers.
Timeline
- First public exploit (EDB-19457)
- Published
Exploit prediction
21.52% chance of exploitation in the next 30 days, higher than 97% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- EDB-19457 Microsoft Commercial Internet System 2.0/2.5 / IIS 4.0 / Site Server Commerce Edition 3.0 alpha/3.0 - Denial of Service dos, 1999-08-11
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:N/I:N/A:P |
Classification
- Weakness
-
- CWE-20 Improper Input Validation
References
-
support.microsoft.com
/default.aspx?scid=kb%3B%5BLN%5D%3BQ238349
vendor-advisory
-
docs.microsoft.com
/en-us/security-updates/securitybulletins/1999/ms99-029
vendor-advisory
-
ciac.org
/ciac/bulletins/j-058.shtml
third-party-advisory, government-resource
-
securityfocus.com
/bid/579
vdb-entry
Sources
- CVE List CVE-1999-0867
- NVD CVE-1999-0867
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