Security readout for executives and security teams
An old flaw in Microsoft Windows NT 4.0's IIS web server let a remote attacker crash the service by sending specially malformed URL requests, taking the website offline until the service was restarted. It is a denial-of-service issue, not a data breach, and Microsoft addressed it in advisory MS00-063 back in 2000. Extremely limited today. Only environments still running Windows NT 4.0 with IIS exposed to untrusted networks are affected. NT 4.0 is decades out of support, so exposure is essentially confined to unmanaged legacy or isolated OT/industrial systems that were never modernized. Low priority for modern estates. Only material if the business still operates Windows NT 4.0 IIS servers, in which case decommissioning or isolating those systems is the real risk-reduction action, not just patching a 25-year-old advisory. Mitigation focus: Apply Microsoft advisory MS00-063 if any NT 4.0 IIS system remains in operation.; Retire or isolate Windows NT 4.0 hosts; migrate workloads to a currently supported Windows Server and IIS release.; Remove direct internet exposure of legacy IIS instances and place them behind a filtering reverse proxy or WAF..
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CVE-2000-0858 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- iis-invald-url-dos(5202)CVE reference · vdb-entry, x_refsource_XF
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.