NCP Secure Enterprise Client (aka VPN/PKI client) 8.30 Build 59, and possibly earlier…
Priority LOW 7Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- High
- Impact type
- —
- Confidentiality · integrity · availability
- None · Partial · None
- Fix status
- No fix listed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA.
Summary
NCP Secure Enterprise Client (aka VPN/PKI client) 8.30 Build 59, and possibly earlier versions, when the Link Firewall and Personal Firewall are both configured to block all inbound and outbound network traffic, allows context-dependent attackers to send inbound UDP traffic with source port 67 and destination port 68, and outbound UDP traffic with source port 68 and destination port 67.
Why it matters now
EPSS 0.00269 19th percentileScored 2026-11-07
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 · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:ncp_network_communications:secure_client:*:*:*:*:*:*:*:* | up to 8.30_build_59 | Vulnerable | Ncp Network Communications |
- cpe:2.3:a:ncp_network_communications:secure_client:*:*:*:*:*:*:*:* Versions up to 8.30_build_59 Vulnerable ·Ncp Network Communications
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2006-3551
- 2026-10-03 Alias added: GHSA-8gcg-g8ch-xhqg
References
More Ncp Network Communications Secure Client vulnerabilities
- TI-2006-00939 The ncprwsnt service in NCP Network Communication Secure Client 8.11 Build 146, and… CVSS 2.0HIGH 7.2
- TI-2006-00936 NCP Network Communication Secure Client 8.11 Build 146, and possibly other versions… CVSS 2.0MEDIUM 4.6
- TI-2006-00935 Client Firewall in NCP Network Communication Secure Client 8.11 Build 146, and possibly… CVSS 2.0MEDIUM 4.6
- TI-2006-00938 NCP Network Communication Secure Client 8.11 Build 146, and possibly other versions… CVSS 2.0LOW 2.1
- TI-2006-00937 NCP Network Communication Secure Client 8.11 Build 146, and possibly other versions… CVSS 2.0LOW 2.1
Sources
- CVE-2006-3551 · CVE Program
- CVE-2006-3551 · NVD
- FIRST EPSS
- GHSA-8gcg-g8ch-xhqg · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences