The design of the Internet Key Exchange (IKE) protocol, when using Aggressive Mode for…
Priority MEDIUM 53Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- Partial · None · None
- Fix status
- No fix listed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA.
Summary
The design of the Internet Key Exchange (IKE) protocol, when using Aggressive Mode for shared secret authentication, does not encrypt initiator or responder identities during negotiation, which may allow remote attackers to determine valid usernames by (1) monitoring responses before the password is supplied or (2) sniffing, as originally reported for FireWall-1 SecuRemote.
Why it matters now
EPSS 0.48573 98th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 2
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:checkpoint:vpn-1_firewall-1:4.0:*:*:*:*:*:*:* | 4.0 | Vulnerable | Check Point |
| cpe:2.3:a:checkpoint:vpn-1_firewall-1:4.1:*:*:*:*:*:*:* | 4.1 | Vulnerable | Check Point |
- cpe:2.3:a:checkpoint:vpn-1_firewall-1:4.0:*:*:*:*:*:*:* Versions 4.0 Vulnerable ·Check Point
- cpe:2.3:a:checkpoint:vpn-1_firewall-1:4.1:*:*:*:*:*:*:* Versions 4.1 Vulnerable ·Check Point
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2002-1623
- 2026-10-03 Alias added: GHSA-ccfp-7gpg-fg7v
References
Advisory 1
Other 5
- 20020903 Check Point statement on use of IKE Aggressive Mode
- 20020911 RE: SecuRemote usernames can be guessed or sniffed using IKE
- http://www.nta-monitor.com/news/checkpoint.htm
- http://www.checkpoint.com/techsupport/alerts/ike.html
- 20020905 RE: SecuRemote usernames can be guessed or sniffed using IKE exchange
More Check Point Vpn-1 Firewall-1 vulnerabilities
- TI-2008-01344 Check Point VPN-1 Power/UTM, with NGX R60 through R65 and NG AI R55 software, allows… CVSS 2.0MEDIUM 6.5
Sources
- CVE-2002-1623 · CVE Program
- CVE-2002-1623 · NVD
- FIRST EPSS
- GHSA-ccfp-7gpg-fg7v · GitHub Advisory Database · CC BY 4.0
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