Is CVE-2005-2640 being actively exploited?

CVE-2005-2640 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2005-2640?

CVE-2005-2640 has a CVSS 2.0 base score of 5.0 (MEDIUM).

CVE-2005-2640

MEDIUM · CVSS 5.0EPSS 7.1%EU EUVD

Behavioral discrepancy information leak in Juniper Netscreen VPN running ScreenOS 5.2.0 and earlier, when using IKE with pre-shared key authentication, allows remote attackers to enumerate valid usernames via an IKE Aggressive Mode packet, which generates a response if the username is valid but does not respond when the username is invalid.

Key facts

CVSS score: 5.0 (v2.0)
Severity: MEDIUM
CVSS vector: AV:N/AC:L/Au:N/C:P/I:N/A:N
EPSS score: 7.1% (94th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2005-2641)
Published: August 23, 2005
NVD last modified: June 16, 2026
Status: Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2005-2641 in the EU Vulnerability Database. Last updated in EUVD on August 7, 2024.

View on the EU Vulnerability Database

Affected products

juniper / netscreen screenos
juniper / netscreen screenos
juniper / netscreen screenos
juniper / netscreen screenos
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juniper / netscreen screenos
juniper / netscreen screenos
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juniper / netscreen screenos
juniper / netscreen screenos
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juniper / netscreen screenos
juniper / netscreen screenos
juniper / netscreen screenos
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juniper / netscreen screenos
juniper / netscreen screenos
juniper / netscreen screenos
juniper / netscreen screenos
juniper / netscreen screenos
juniper / netscreen screenos
juniper / netscreen screenos
juniper / netscreen screenos
juniper / netscreen screenos
juniper / netscreen screenos
juniper / netscreen screenos

and 83 more…

Certified products that may be affected

1 FIPS 140 or Common Criteria certified product, from automated matching by sec-certs.org.

Juniper NetScreen-5GT - Juniper Networks, Inc. - FIPS 140 629 - historical

References

http://marc.info/?l=bugtraq&m=112438068426034&w=2
http://secunia.com/advisories/16474/(Vendor Advisory)
http://securitytracker.com/id?1014728
http://www.nta-monitor.com/news/vpn-flaws/juniper/netscreen/index.htm(Exploit, Vendor Advisory)
http://www.securityfocus.com/bid/14595(Exploit)

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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