The isakmp_info_recv function in src/racoon/isakmp_inf.c in racoon in Ipsec-tools before 0.6.7 allows remote attackers to cause a denial of service (tunnel crash) via crafted (1) DELETE (ISAKMP_NPTYPE_D) and (2) NOTIFY (ISAKMP_NPTYPE_N) messages.
Conclusion & alert: CVE-2007-1841 is rated Moderate Risk (41.9/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 2.85%). Mandatory action: Review affected assets and schedule remediation.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2026-06-15 | 9.81% | 2.85% | -6.96% |
| 2 | 2026-05-04 | 9.48% | 9.81% | +0.33% |
| 3 | 2026-01-19 | — | 9.48% | — |
Full EPSS history (21 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 4.3 | 2.0 | MEDIUM |
|
8.6 | 2.9 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
gentoo
|
normal | CVE-2007-1841: 1 GLSA(s) (200705-09), 1 atom(s) (net-firewall/ipsec-tools); latest impact normal. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2007-1841 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2007-1841 |
ubuntu
|
medium | CVE-2007-1841 medium priority: Ubuntu including 1 source packages (ipsec-tools), 4 status rows across 4 suites (dapper, edgy, feisty, upstream): released 3, needs-triage 1. | https://ubuntu.com/security/CVE-2007-1841 |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| ipsec-tools | ipsec-tools | <= 0.6.2 | cpe:2.3:a:ipsec-tools:ipsec-tools:*:*:*:*:*:*:*:* |