CVE-1999-1233
IIS 4.0 does not properly restrict access for the initial session request from a user's IP...
IIS 4.0 does not properly restrict access for the initial session request from a user's IP address if the address does not resolve to a DNS domain, aka the "Domain Resolution" vulnerability.
Exploit likelihood
What each source reports
NVD Score used
IIS 4.0 does not properly restrict access for the initial session request from a user's IP address if the address does not resolve to a DNS domain, aka the "Domain Resolution" vulnerability.
- Record
CVE-1999-1233- CVSS 2.0
- 7.5 High
AV:N/AC:L/Au:N/C:P/I:P/A:P - Updated
- 2026-11-02
CVE List No score
IIS 4.0 does not properly restrict access for the initial session request from a user's IP address if the address does not resolve to a DNS domain, aka the "Domain Resolution" vulnerability.
- Record
CVE-1999-1233- Updated
- 2026-11-02
EUVDEUVD-1999-1214 No score
IIS 4.0 does not properly restrict access for the initial session request from a user's IP address if the address does not resolve to a DNS domain, aka the "Domain Resolution" vulnerability.
- Record
EUVD-1999-1214- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-53c2-2qjx-38qh No score
IIS 4.0 does not properly restrict access for the initial session request from a user's IP...
IIS 4.0 does not properly restrict access for the initial session request from a user's IP address if the address does not resolve to a DNS domain, aka the "Domain Resolution" vulnerability.
- Record
GHSA-53c2-2qjx-38qh- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| facts | ||
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-1999-1233 is a high vulnerability (CVSS 7.5) in Microsoft Internet Information Server, published December 31, 1999. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 5.45%, the 92nd percentile. No source names a fixed version.