What is CVE-2001-1097?

CVE-2001-1097 is a vulnerability in Cisco iOS. Published 2001-07-24.

Is CVE-2001-1097 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Cisco iOS

CVE-2001-1097

Cisco routers and switches running IOS 12.0 through 12.2.1 allows a remote attacker to cause a denial of service via a flood of UDP packets.

Published 2001-07-24 · last modified 2026-06-16.

CVSS v2 metric

CVSS v2 base score 5.0 (Medium). Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P. This CVE predates CVSS v3 and has no v3 score from NVD.

EPSS exploit prediction

EPSS: 0.043 (90.8th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 91st percentile — 90.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.043 · newest: 0.043 · change: 0.000

Affected products

Cisco iOS — versions 12.0(6), 12.0\(6\), 12.2

Public proof-of-concept exploits

ARPSyndicate/cve-scores

References

www.securityfocus.com/archive/1/199558 (Vendor Advisory, mailing-list)
exchange.xforce.ibmcloud.com/vulnerabilities/6913 (vdb-entry)
marc.info/ (mailing-list)
www.securityfocus.com/bid/3096 (vdb-entry, Vendor Advisory)

Frequently asked questions

What is CVE-2001-1097?: CVE-2001-1097 is a vulnerability in Cisco iOS. Published 2001-07-24.
Is CVE-2001-1097 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.