Vulnerability in Microsoft Isa Server

CVE-2001-1533

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

Published · last modified .

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.

EPSS exploit prediction

EPSS: 0.180 (97.1th percentile), scored .

Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 97th percentile — 97.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2001-1533: held from 0.180 to 0.180.

EPSS over last 30 days · oldest: 0.180 · newest: 0.180 · change: 0.000

Affected products

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2001-1533?
CVE-2001-1533 is a medium-severity vulnerability in Microsoft Isa Server. CVSS score: 5.3/10. Published 2001-12-31.
How severe is CVE-2001-1533?
Medium severity. CVSS v3 base score is 5.3 out of 10.
Is CVE-2001-1533 known to be exploited?
1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.