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TI-1999-01484 Aliases CVE-1999-1537GHSA-54rf-m93w-vh4v

IIS 3.x and 4.x does not distinguish between pages requiring encryption and those that do…

Priority LOW 34Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
— Not recorded in CVSS 2.0
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
None · None · Partial
Fix status
No fix listed

Attack profile from CVSS 2.0 · NVD. Fix status from CNA.

Summary

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.

Why it matters now

EPSS 0.08525 95th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:microsoft:internet_information_server:3.0:*:*:*:*:*:*:*3.0VulnerableMicrosoft
cpe:2.3:a:microsoft:internet_information_server:4.0:*:*:*:*:*:*:*4.0VulnerableMicrosoft
  • cpe:2.3:a:microsoft:internet_information_server:3.0:*:*:*:*:*:*:* Versions 3.0 Vulnerable ·Microsoft
  • cpe:2.3:a:microsoft:internet_information_server:4.0:*:*:*:*:*:*:* Versions 4.0 Vulnerable ·Microsoft

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-1999-1537
  2. 2026-10-03 Alias added: GHSA-54rf-m93w-vh4v
  3. 2026-10-19 EPSS moved to the 95th–99th percentile

References

Other 1

  • TI-2001-00492 Buffer overflow in ISAPI extension (idq.dll) in Index Server 2.0 and Indexing Service… CVSS 2.0HIGH 10.0
  • TI-2009-02880 Buffer overflow in the FTP Service in Microsoft Internet Information Services (IIS) 5.0… CVSS 2.0HIGH 9.0
  • TI-1999-00961 The Remote Data Service (RDS) DataFactory component of Microsoft Data Access Components… CVSS 2.0HIGH 10.0
  • TI-1999-00824 Buffer overflow in IIS 4.0 allows remote attackers to cause a denial of service via a… CVSS 2.0HIGH 10.0
  • TI-2008-00066 Unspecified vulnerability in Microsoft Internet Information Services (IIS) 5.1 through… CVSS 2.0HIGH 10.0
  • TI-2001-00331 Directory traversal vulnerability in IIS 5.0 and earlier allows remote attackers to… CVSS 2.0HIGH 7.5
See all 106 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences