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TI-2001-01481 Aliases CVE-2001-1533GHSA-ffqx-92p8-2h7f

Microsoft Internet Security and Acceleration (ISA) Server 2000 allows remote attackers to…

Priority MEDIUM 48Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
None · None · Low
Fix status
No fix listed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA.

Summary

Microsoft Internet Security and Acceleration (ISA) Server 2000 allows remote attackers to cause a denial of service via a flood of fragmented UDP packets. NOTE: the vendor disputes this issue, saying that it requires high bandwidth to exploit, and the server does not experience any instability. Therefore this "laws of physics" issue might not be included in CVE

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.18012 97th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

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-2001-1533
  2. 2026-10-03 Alias added: GHSA-ffqx-92p8-2h7f

References

Other 3

  • 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