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CVE-2002-1623

41
FAUCET Score

CVE-2002-1623 describes a design flaw in the Internet Key Exchange (IKE) protocol's Aggressive Mode, specifically affecting Check Point VPN-1/FireWall-1. This vulnerability allows remote attackers to discover valid usernames because initiator and responder identities are not encrypted during negotiation, even before password authentication. With a CVSS score of 5.0, this low-complexity attack can lead to information disclosure (username enumeration) without requiring authentication. Despite its age and a high FAUCET Risk Score of 97/100, there is no known active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
4.0CPE matchmatch criteria
cpe:2.3:a:checkpoint:vpn-1_firewall-1:4.0:*:*:*:*:*:*:*
4.1CPE matchmatch criteria
cpe:2.3:a:checkpoint:vpn-1_firewall-1:4.1:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.0MEDIUM

AV:N/AC:L/Au:N/C:P/I:N/A:N

Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
48.57%
Probability of exploitation in next 30 days
EPSS Percentile
98.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.4857 is in the 99th percentile among its peer group of 23,701 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

lists.grok.org.uk / pipermail/full-disclosure/2002-September/001223.html
marc.info
marc.info
exchange.xforce.ibmcloud.com / vulnerabilities/10034
checkpoint.com / techsupport/alerts/ike.html
kb.cert.org / vuls/id/886601
US Government Resource
nta-monitor.com / news/checkpoint.htm
securiteam.com / securitynews/5TP040U8AW.html
Exploit
securityfocus.com / archive/1/290202
Exploit
securityfocus.com / bid/5607