CVE-2009-4293

Internet Initiative Japan SEIL/X1, SEIL/X2, and SEIL/B1 firmware 2.30 through 2.51, when NAT is enabled, allows remote attackers to cause a denial of service (system restart) via crafted GRE packets.

Published: 2009-12-10 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2009-4293 is rated Moderate Risk (54.9/100): CVSS High severity, with medium exploitation likelihood (EPSS 1.68%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2009-4293

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 1.03% 1.68% +0.65%
2 2026-05-01 0.92% 1.03% +0.11%
3 2025-03-17 — 0.92% —

Full EPSS history (5 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2009-4293

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.1 2.0 HIGH
AV:N/AC:M/Au:N/C:N/I:N/A:C Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:C)
Complete availability impact.
 8.6 6.9 [email protected]

Weakness enumeration for CVE-2009-4293

Affected software / configurations for CVE-2009-4293

Vendor Product Version Raw CPE
iij seil\/x1_firmware 2.30 cpe:2.3:a:iij:seil\/x1_firmware:2.30:*:*:*:*:*:*:*
iij seil\/x1_firmware 2.40 cpe:2.3:a:iij:seil\/x1_firmware:2.40:*:*:*:*:*:*:*
iij seil\/x1_firmware 2.41 cpe:2.3:a:iij:seil\/x1_firmware:2.41:*:*:*:*:*:*:*
iij seil\/x1_firmware 2.42 cpe:2.3:a:iij:seil\/x1_firmware:2.42:*:*:*:*:*:*:*
iij seil\/x1_firmware 2.50 cpe:2.3:a:iij:seil\/x1_firmware:2.50:*:*:*:*:*:*:*
iij seil\/x1_firmware 2.51 cpe:2.3:a:iij:seil\/x1_firmware:2.51:*:*:*:*:*:*:*
iij seil\/x1 — cpe:2.3:h:iij:seil\/x1:*:*:*:*:*:*:*:*
iij seil\/b1_firmware 2.30 cpe:2.3:a:iij:seil\/b1_firmware:2.30:*:*:*:*:*:*:*
iij seil\/b1_firmware 2.40 cpe:2.3:a:iij:seil\/b1_firmware:2.40:*:*:*:*:*:*:*
iij seil\/b1_firmware 2.41 cpe:2.3:a:iij:seil\/b1_firmware:2.41:*:*:*:*:*:*:*
iij seil\/b1_firmware 2.42 cpe:2.3:a:iij:seil\/b1_firmware:2.42:*:*:*:*:*:*:*
iij seil\/b1_firmware 2.50 cpe:2.3:a:iij:seil\/b1_firmware:2.50:*:*:*:*:*:*:*
iij seil\/b1_firmware 2.51 cpe:2.3:a:iij:seil\/b1_firmware:2.51:*:*:*:*:*:*:*
iij seil\/b1 — cpe:2.3:h:iij:seil\/b1:*:*:*:*:*:*:*:*
iij seil\/x2_firmware 2.30 cpe:2.3:a:iij:seil\/x2_firmware:2.30:*:*:*:*:*:*:*
iij seil\/x2_firmware 2.40 cpe:2.3:a:iij:seil\/x2_firmware:2.40:*:*:*:*:*:*:*
iij seil\/x2_firmware 2.41 cpe:2.3:a:iij:seil\/x2_firmware:2.41:*:*:*:*:*:*:*
iij seil\/x2_firmware 2.42 cpe:2.3:a:iij:seil\/x2_firmware:2.42:*:*:*:*:*:*:*
iij seil\/x2_firmware 2.50 cpe:2.3:a:iij:seil\/x2_firmware:2.50:*:*:*:*:*:*:*
iij seil\/x2_firmware 2.51 cpe:2.3:a:iij:seil\/x2_firmware:2.51:*:*:*:*:*:*:*
iij seil\/x2 — cpe:2.3:h:iij:seil\/x2:*:*:*:*:*:*:*:*

References for CVE-2009-4293

cvelogic Threat Intelligence