VDB-14728 · CVE-1999-1086 · BID 528

Novell NetWare 4.1/4.11/5.0 IPX Admin Session IPC Fragmented Packet authentication spoofing

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
9.4	$0-$5k	0.00

Summaryinfo

A vulnerability classified as critical was found in Novell NetWare 4.1/4.11/5.0. Affected is an unknown function of the component IPX Admin Session Handler. Executing a manipulation as part of IPC Fragmented Packet can lead to authentication spoofing. This vulnerability appears as CVE-1999-1086. There is no available exploit. Upgrading the affected component is advised.

Detailsinfo

A vulnerability has been found in Novell NetWare 4.1/4.11/5.0 (Operating System) and classified as very critical. This vulnerability affects an unknown function of the component IPX Admin Session Handler. The manipulation as part of a IPC Fragmented Packet leads to a authentication spoofing vulnerability. The CWE definition for the vulnerability is CWE-290. This attack-focused weakness is caused by incorrectly implemented authentication schemes that are subject to spoofing attacks. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

Novell 5 and earlier, when running over IPX with a packet signature level less than 3, allows remote attackers to gain administrator privileges by spoofing the MAC address in IPC fragmented packets that make NetWare Core Protocol (NCP) calls.

The weakness was presented 07/15/1999 (Website). The advisory is shared for download at marc.theaimsgroup.com. This vulnerability was named CVE-1999-1086. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 04/19/2026). It is expected to see the exploit prices for this product decreasing in the near future.

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at SecurityFocus (BID 528†). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

Operating System

Vendor

Novell

Name

NetWare

Version

License

commercial

Support

end of life

Website

Vendor: https://www.novell.com/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.8
VulDB Meta Temp Score: 9.4

VulDB Base Score: 9.8
VulDB Temp Score: 9.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Authentication spoofing
CWE: CWE-290 / CWE-287
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

07/15/1999 🔍
07/15/1999 +0 days 🔍
07/15/1999 +0 days 🔍
06/21/2014 +5455 days 🔍
04/19/2026 +4320 days 🔍

Sourcesinfo

Vendor: novell.com

Advisory: marc.theaimsgroup.com
Status: Confirmed

CVE: CVE-1999-1086 (🔍)
GCVE (CVE): GCVE-0-1999-1086
GCVE (VulDB): GCVE-100-14728
SecurityFocus: 528 - Netware IPX Admin Session Spoof Vulnerability

Entryinfo

Created: 06/21/2014 12:09
Updated: 04/19/2026 08:57
Changes: 06/21/2014 12:09 (47), 05/21/2018 10:06 (6), 04/19/2026 08:57 (18)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.