VULNERABILITY INTELLIGENCE

CVE-2008-1618

CVSS score5 MEDIUM
EPSS probability1.74%
CISA KEVNot currently listed
Published2008-04-07
Last modified2026-06-16
CVSS vectorAV:N/AC:L/Au:N/C:P/I:N/A:N

Description

The PPTP VPN service in Watchguard Firebox before 10, when performing the MS-CHAPv2 authentication handshake, generates different error codes depending on whether the username is valid or invalid, which allows remote attackers to enumerate valid usernames.

Weakness classification

  • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor

Primary references