How severe is CVE-2014-7255?

CVE-2014-7255 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2014-7255 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (86th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2014-7255?

CVE-2014-7255 primarily affects Iij Seil B1 Firmware. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2014-7255?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2014-7255 published?

CVE-2014-7255 was published on 2014-12-05 and last updated on 2026-06-17.

CVE-2014-7255

CVE-2014-7255 is a high-severity vulnerability in Iij Seil B1 Firmware with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-400.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 3% (86th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-400
Affected product: Iij Seil B1 Firmware
Published: 2014-12-05
Last modified: 2026-06-17

Description

Internet Initiative Japan Inc. SEIL Series routers SEIL/X1 2.50 through 4.62, SEIL/X2 2.50 through 4.62, SEIL/B1 2.50 through 4.62, and SEIL/x86 Fuji 1.70 through 3.22 allow remote attackers to cause a denial of service (CPU and traffic consumption) via a large number of NTP requests within a short time, which causes unnecessary NTP responses to be sent.

Frequently asked questions

What is CVE-2014-7255?: Internet Initiative Japan Inc. SEIL Series routers SEIL/X1 2.50 through 4.62, SEIL/X2 2.50 through 4.62, SEIL/B1 2.50 through 4.62, and SEIL/x86 Fuji 1.70 through 3.22 allow remote attackers to cause a denial of service (CPU and traffic consumption) via a large number of NTP requests within a short time, which causes unnecessary NTP responses to be sent.
How severe is CVE-2014-7255?: CVE-2014-7255 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2014-7255 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (86th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2014-7255?: CVE-2014-7255 primarily affects Iij Seil B1 Firmware. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2014-7255?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2014-7255 published?: CVE-2014-7255 was published on 2014-12-05 and last updated on 2026-06-17.

References

Affected products (4)

cpe:2.3:o:iij:seil_b1_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:iij:seil_x2_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:iij:seil_x1_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:iij:seil_x86_fuji_firmware:*:*:*:*:*:*:*:*

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