Vulnerability Report

CVE-1999-1203

Title: Ascend Multilink PPP for ISDN before 4.6 allows DoS via spoofed endpoint identifier

DoS

Proof Of Concept

No public PoC currently indexed for CVE-1999-1203.

CWE Category NVD-CWE-noinfo

Published Date Feb 12, 1999

Modified Date Apr 16, 2026

Exploit Status Not Found

Score 5.0 CVSS v2.0

Exploit Probability (EPSS)

0.74%

Vulnerability Summary

CVE-1999-1203: Multilink PPP for ISDN dialup users in Ascend before 4.6 allows remote attackers to cause a denial of service via a spoofed endpoint identifier.

Impacted Vendors

ascend 1

Reference Links

http://marc.info/?l=bugtraq&m=91868964203769&w=2 http://marc.info/?l=bugtraq&m=91888117502765&w=2 http://www.iss.net/security_center/static/7498.php http://marc.info/?l=bugtraq&m=91868964203769&w=2 http://marc.info/?l=bugtraq&m=91888117502765&w=2 http://www.iss.net/security_center/static/7498.php

CVSS v2.0

Source Entity [email protected]

Severity MEDIUM

5.0

Access Vector

N/A

Authentication

N/A

RAW VECTOR AV:N/AC:L/Au:N/C:N/I:N/A:P

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-1999-1203 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

April 16, 2026 MODIFIED

Vulnerability data updated via NVD.

April 03, 2025 MODIFIED

Vulnerability data or affected products updated.

February 12, 1999 PUBLISHED

Vulnerability first announced in NVD.

Attack Vector Matrix

Access Vector N/A

Complexity N/A

Privileges N/A

Interaction NONE

CVSS Vector String


                                    AV:N/AC:L/Au:N/C:N/I:N/A:P

Affected Stack

No specific products linked.