Security readout for executives and security teams
Plain-English summary
This CVE concerns an old Microsoft IIS issue where prior security patches could make IIS leak memory. An attacker sending repeated requests could degrade or stop the web service. It is mainly urgent if the organization still runs legacy IIS 5.0 or earlier.
Executive priority
Treat as a legacy-service availability risk. Prioritize only if IIS 5.0 or earlier remains in production, especially on public-facing systems or critical internal applications.
Technical view
CVE-2001-0337 describes a memory leak introduced by Microsoft MS01-014 and MS01-016 patches for IIS 5.0 and earlier. A series of requests can trigger denial of service. The source bundle provides no CVSS, CWE, CPEs, exploit details, or proof of active exploitation.
Likely exposure
Exposure is limited to legacy Microsoft IIS 5.0 and earlier systems with the affected patch state. Modern Windows/IIS deployments are not identified as affected in the supplied sources.
Exploitation context
The supplied sources support denial-of-service impact through repeated requests. They do not support active exploitation, public exploit availability, authentication requirements, or remote code execution.
Researcher notes
Evidence is sparse and old. The affected scope is described as IIS 5.0 and earlier, but the bundle lists no CPEs or versions beyond that. Do not infer exploit maturity or broader Microsoft product impact.
Mitigation direction
- Identify any remaining IIS 5.0 or earlier servers.
- Review Microsoft MS01-026 guidance for the vendor-corrected update path.
- Avoid relying only on MS01-014 or MS01-016 for affected systems.
- Retire or isolate unsupported legacy IIS assets where feasible.
Validation and detection
- Inventory internet-facing and internal IIS versions.
- Check whether MS01-014 or MS01-016 are present on IIS 5.0 or earlier hosts.
- Confirm whether Microsoft MS01-026 guidance has been applied.
- Review monitoring for unexplained IIS memory growth or service restarts.
Public sources used
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-2001-0337 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
- MS01-026CVE reference · vendor-advisory, x_refsource_MS
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.