Vulnerability in IBM Aix

CVE-2001-0998

IBM HACMP 4.4 allows remote attackers to cause a denial of service via a completed TCP connection to HACMP ports (e.g., using a port scan) that does not send additional data, which causes a failure in snmpd.

Published 2001-09-24 · 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: 0.029 (86.4th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 86th percentile — 86.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.029 · newest: 0.029 · change: 0.000

Affected products

IBM Aix — versions 4.3, 4.3.3, 5.1
IBM Hacmp — versions 4.4

References

www-1.ibm.com/support/search.wss (vendor-advisory)
www.securityfocus.com/archive/1/217910 (mailing-list, Patch)
www.securityfocus.com/archive/1/216105 (Vendor Advisory, mailing-list)
exchange.xforce.ibmcloud.com/vulnerabilities/7165 (vdb-entry)
www-1.ibm.com/support/search.wss (vendor-advisory)
www.securityfocus.com/bid/3358 (Exploit, Patch, vdb-entry, Vendor Advisory)