The Internet Key Exchange version 1 (IKEv1) implementation (isakmp_agg.c) in the Shoichi…
Priority LOW 27Published · 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
- None · None · Partial
- Fix status
- No fix listed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA.
Summary
The Internet Key Exchange version 1 (IKEv1) implementation (isakmp_agg.c) in the Shoichi Sakane KAME Project racoon, as used by NetBSD 1.6, 2.x before 20060119, certain FreeBSD releases, and possibly other distributions of BSD or Linux operating systems, when running in aggressive mode, allows remote attackers to cause a denial of service (daemon crash) via crafted IKE packets, as demonstrated by the PROTOS ISAKMP Test Suite for IKEv1.
Why it matters now
EPSS 0.02407 84th 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:internet_key_exchange:internet_key_exchange:1:*:*:*:*:*:*:* | 1 | Vulnerable | Internet Key Exchange |
- cpe:2.3:a:internet_key_exchange:internet_key_exchange:1:*:*:*:*:*:*:* Versions 1 Vulnerable ·Internet Key Exchange
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2006-1646
- 2026-10-03 Alias added: GHSA-rjhx-jgh9-pm4q
References
More Internet Key Exchange vulnerabilities
- TI-2005-03461 Multiple unspecified format string vulnerabilities in multiple unspecified… CVSS 2.0HIGH 10.0
- TI-2006-02239 The Internet Key Exchange version 1 (IKEv1) implementation in the libike library in… CVSS 2.0MEDIUM 5.0
- TI-2005-03463 Multiple buffer overflows in multiple unspecified implementations of Internet Key… CVSS 2.0MEDIUM 5.0
- TI-2005-03462 Multiple unspecified vulnerabilities in multiple unspecified implementations of Internet… CVSS 2.0MEDIUM 5.0
Sources
- CVE-2006-1646 · CVE Program
- CVE-2006-1646 · NVD
- FIRST EPSS
- GHSA-rjhx-jgh9-pm4q · GitHub Advisory Database · CC BY 4.0
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