CVE-2008-1618

Name: CVE-2008-1618
Creator: NVD / NIST
Published: 2008-04-07T18:44:00+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 1.74%

Last modified Jun 16, 2026

CVE-2008-1618 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 1.74% chance of exploitation in the next 30 days.

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.

Metrics

EPSS Probability

1.74%

74.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-200

Affected Software

Vendor	Product	Versions
Watchguard	Firebox Pptp Vpn	4.9
Watchguard	Firebox Pptp Vpn	5.0

References

Timeline

Published: Apr 7, 2008
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2008-1618?

How severe is CVE-2008-1618?

Severity scoring for CVE-2008-1618 is pending analysis. The EPSS model estimates a 1.74% probability of exploitation in the next 30 days.

How do I fix CVE-2008-1618?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2008-1618?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST