What is CVE-1999-0265?

CVE-1999-0265 is a vulnerability in Microware Os-9, classified under Improper Input Validation. Published 1997-01-01.

Is CVE-1999-0265 known to be exploited?

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

Improper input validation in Microware Os-9

CVE-1999-0265

ICMP redirect messages may crash or lock up a host.

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

Published 1997-01-01 · 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: 0.011 (64.2th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 64th percentile — 64.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.011 · newest: 0.011 · change: 0.000

Affected products

Microware Os-9
Novell Netware — versions 3.12

Weakness classification (CWE)

CWE-20 — Improper Input Validation

Public proof-of-concept exploits

References

support.microsoft.com/default.aspx (vendor-advisory)

Frequently asked questions

What is CVE-1999-0265?: CVE-1999-0265 is a vulnerability in Microware Os-9, classified under Improper Input Validation. Published 1997-01-01.
Is CVE-1999-0265 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.