What is CVE-1999-0789?

CVE-1999-0789 is a vulnerability in IBM Aix. Published 1999-09-28.

Is CVE-1999-0789 known to be exploited?

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

Vulnerability in IBM Aix

CVE-1999-0789

Buffer overflow in AIX ftpd in the libc library.

Published 1999-09-28 · last modified 2026-06-16.

CVSS v2 metric

CVSS v2 base score 10.0 (High). Vector: AV:N/AC:L/Au:N/C:C/I:C/A:C. This CVE predates CVSS v3 and has no v3 score from NVD.

EPSS exploit prediction

EPSS: 0.031 (87.3th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 87th percentile — 87.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.031 · newest: 0.031 · change: 0.000

Affected products

IBM Aix — versions 4.3, 4.3.1, 4.3.2

Public proof-of-concept exploits

ARPSyndicate/cve-scores

References

www.securityfocus.com/bid/679 (vdb-entry)
www.ciac.org/ciac/bulletins/j-072.shtml (government-resource, third-party-advisory)

Frequently asked questions

What is CVE-1999-0789?: CVE-1999-0789 is a vulnerability in IBM Aix. Published 1999-09-28.
Is CVE-1999-0789 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.