CVE-1999-1537
IIS 3.x and 4.x does not distinguish between pages requiring encryption and those that do not,...
IIS 3.x and 4.x does not distinguish between pages requiring encryption and those that do not, which allows remote attackers to cause a denial of service (resource exhaustion) via SSL requests to the HTTPS port for normally unencrypted files, which will cause IIS to perform extra work to send the files over SSL.
Exploit likelihood
What each source reports
NVD Score used
IIS 3.x and 4.x does not distinguish between pages requiring encryption and those that do not, which allows remote attackers to cause a denial of service (resource exhaustion) via SSL requests to the HTTPS port for normally unencrypted files, which will cause IIS to perform extra work to send the files over SSL.
- Record
CVE-1999-1537- CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:N/I:N/A:P - Updated
- 2026-11-02
CVE List No score
IIS 3.x and 4.x does not distinguish between pages requiring encryption and those that do not, which allows remote attackers to cause a denial of service (resource exhaustion) via SSL requests to the HTTPS port for normally unencrypted files, which will cause IIS to perform extra work to send the files over SSL.
- Record
CVE-1999-1537- Updated
- 2026-11-02
EUVDEUVD-1999-1518 No score
IIS 3.x and 4.x does not distinguish between pages requiring encryption and those that do not, which allows remote attackers to cause a denial of service (resource exhaustion) via SSL requests to the HTTPS port for normally unencrypted files, which will cause IIS to perform extra work to send the files over SSL.
- Record
EUVD-1999-1518- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-54rf-m93w-vh4v No score
IIS 3.x and 4.x does not distinguish between pages requiring encryption and those that do not,...
IIS 3.x and 4.x does not distinguish between pages requiring encryption and those that do not, which allows remote attackers to cause a denial of service (resource exhaustion) via SSL requests to the HTTPS port for normally unencrypted files, which will cause IIS to perform extra work to send the files over SSL.
- Record
GHSA-54rf-m93w-vh4v- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-1999-1537 is a medium vulnerability (CVSS 5.0) in Microsoft Internet Information Server, published July 7, 1999. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 8.53%, the 95th percentile. No source names a fixed version.