CVE-2008-1618
MEDIUM · CVSS 5.0EPSS 1.7%EU EUVD
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.
Key facts
- CVSS score
- 5.0 (v2.0)
- Severity
- MEDIUM
- CVSS vector
AV:N/AC:L/Au:N/C:P/I:N/A:N- Weakness (CWE)
- CWE-200
- EPSS score
- 1.7% (78th percentile)
- In CISA KEV
- No
- In EU EUVD
- Yes (EUVD-2008-1619)
- Published
- April 7, 2008
- NVD last modified
- June 16, 2026
- Status
- Modified
EU Vulnerability Database (EUVD)
This vulnerability is also tracked by ENISA as EUVD-2008-1619 in the EU Vulnerability Database. Last updated in EUVD on August 7, 2024.
View on the EU Vulnerability DatabaseAffected products
- watchguard / firebox pptp vpn
- watchguard / firebox pptp vpn
References
- http://secunia.com/advisories/29708(Vendor Advisory)
- http://www.mwrinfosecurity.com/publications/mwri_watchguard-firebox-pptp-vpn-user-enumeration-advisory_2008-04-04.pdf(Exploit, Patch)
- http://www.osvdb.org/44218
- http://www.securityfocus.com/bid/28619
- http://www.securitytracker.com/id?1019796
- http://www.vupen.com/english/advisories/2008/1152/references(Vendor Advisory)
- https://exchange.xforce.ibmcloud.com/vulnerabilities/41683
Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS
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