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CVE-2001-1533
Microsoft Internet Security and Acceleration (ISA) Server 2000 allows remote attackers to cause a denial of service via a flood of…
Medium5.3EPSS 18.0%
- Published
- Updated
- Reserved
- Assigned by
- mitre
Description
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
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| CISA-ADPADP (enrichment) | 3.1 | Medium5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L |
| NVDNVD · Modified | 3.1 | Medium5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L |
- EPSS (exploitation in 30 days)
- 18.0% · top 2.8% of all CVEs (2 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: yes · Technical impact: partial
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.3.
Weakness
- n/a
- CWE-noinfo Not enough information
Affected products
n/a
- affected n/a
References (4)
- 3501 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- isa-udp-flood-dos(7446) (opens in a new tab)vdb-entryx_refsource_XFx_transferred
- 20051101 RE: Microsoft ISA Server Fragmented Udp Flood Vulnerability (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
- 20011102 Microsoft ISA Server Fragmented Udp Flood Vulnerability (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Record last updated .