CVE-2008-1618

medium

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.

References

https://exchange.xforce.ibmcloud.com/vulnerabilities/41683

http://www.vupen.com/english/advisories/2008/1152/references

http://www.securitytracker.com/id?1019796

http://www.securityfocus.com/bid/28619

http://www.osvdb.org/44218

http://secunia.com/advisories/29708

Details

Source: Mitre, NVD

Published: 2008-04-07

Updated: 2026-06-16

Risk Information

CVSS v2

Base Score: 5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:N

Severity: Medium

CVSS v3

Base Score: 5.3

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Severity: Medium

EPSS

EPSS: 0.0061