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TI-2001-00531 Aliases CVE-2001-0546GHSA-9ggc-843g-q3g8

Memory leak in H.323 Gatekeeper Service in Microsoft Internet Security and Acceleration…

Priority MEDIUM 40Published · 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

Memory leak in H.323 Gatekeeper Service in Microsoft Internet Security and Acceleration (ISA) Server 2000 allows remote attackers to cause a denial of service (resource exhaustion) via a large amount of malformed H.323 data.

Why it matters now

EPSS 0.17341 97th 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 · 1

CPEVersionsRoleVendor
cpe:2.3:a:microsoft:isa_server:2000:*:*:*:*:*:*:*2000VulnerableMicrosoft
  • cpe:2.3:a:microsoft:isa_server:2000:*:*:*:*:*:*:* Versions 2000 Vulnerable ·Microsoft

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2001-0546
  2. 2026-10-03 Alias added: GHSA-9ggc-843g-q3g8

References

Advisory 1

  • TI-2009-01078 The Microsoft Office Web Components Spreadsheet ActiveX control (aka OWC10 or OWC11), as… CVSS 2.0HIGH 9.3
  • TI-2009-01455 Buffer overflow in the Office Web Components ActiveX Control in Microsoft Office XP SP3… CVSS 2.0HIGH 9.3
  • TI-2002-00358 Buffer overflow in gopher client for Microsoft Internet Explorer 5.1 through 6.0, Proxy… CVSS 2.0HIGH 7.5
  • TI-2009-00541 The Office Web Components ActiveX Control in Microsoft Office XP SP3, Office 2003 SP3… CVSS 2.0HIGH 9.3
  • TI-2009-01077 Microsoft Internet Security and Acceleration (ISA) Server 2006 Gold and SP1, when Radius… CVSS 2.0HIGH 9.0
  • TI-2006-06769 Microsoft Internet Security and Acceleration (ISA) Server 2004 logs unusual ASCII… CVSS 2.0HIGH 10.0
See all 20 →

Sources

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