How severe is CVE-2014-7256?

CVE-2014-7256 has a CVSS 2.0 base score of 7.8, rated high severity.

Is CVE-2014-7256 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (76th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2014-7256?

CVE-2014-7256 primarily affects Iij Seil Plus Firmware. In total, 79 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2014-7256?

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-2014-7256 published?

CVE-2014-7256 was published on 2014-12-05 and last updated on 2026-06-17.

CVE-2014-7256

CVE-2014-7256 is a high-severity vulnerability in Iij Seil Plus Firmware with a CVSS 2.0 base score of 7.8. 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-399.

Key facts

Severity: High (CVSS 2.0 base score 7.8)
EPSS exploit prediction: 2% (76th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-399
Affected product: Iij Seil Plus Firmware
Published: 2014-12-05
Last modified: 2026-06-17

Description

The (1) PPP Access Concentrator (PPPAC) and (2) Dial-Up Networking Internet Initiative Japan Inc. SEIL series routers SEIL/x86 Fuji 1.00 through 3.22; SEIL/X1, SEIL/X2, and SEIL/B1 1.00 through 4.62; SEIL/Turbo 1.82 through 2.18; and SEIL/neu 2FE Plus 1.82 through 2.18 allow remote attackers to cause a denial of service (restart) via crafted (a) GRE or (b) MPPE packets.

Frequently asked questions

What is CVE-2014-7256?: The (1) PPP Access Concentrator (PPPAC) and (2) Dial-Up Networking Internet Initiative Japan Inc. SEIL series routers SEIL/x86 Fuji 1.00 through 3.22; SEIL/X1, SEIL/X2, and SEIL/B1 1.00 through 4.62; SEIL/Turbo 1.82 through 2.18; and SEIL/neu 2FE Plus 1.82 through 2.18 allow remote attackers to cause a denial of service (restart) via crafted (a) GRE or (b) MPPE packets.
How severe is CVE-2014-7256?: CVE-2014-7256 has a CVSS 2.0 base score of 7.8, rated high severity.
Is CVE-2014-7256 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (76th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2014-7256?: CVE-2014-7256 primarily affects Iij Seil Plus Firmware. In total, 79 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2014-7256?: 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-2014-7256 published?: CVE-2014-7256 was published on 2014-12-05 and last updated on 2026-06-17.

References

Affected products (79)

cpe:2.3:o:iij:seil_plus_firmware:1.82:*:*:*:*:*:*:*
cpe:2.3:o:iij:seil_plus_firmware:1.83:*:*:*:*:*:*:*
cpe:2.3:o:iij:seil_plus_firmware:1.84:*:*:*:*:*:*:*
cpe:2.3:o:iij:seil_plus_firmware:1.85:*:*:*:*:*:*:*
cpe:2.3:o:iij:seil_plus_firmware:1.86:*:*:*:*:*:*:*
cpe:2.3:o:iij:seil_plus_firmware:1.87:*:*:*:*:*:*:*
cpe:2.3:o:iij:seil_plus_firmware:1.88:*:*:*:*:*:*:*
cpe:2.3:o:iij:seil_plus_firmware:1.89:*:*:*:*:*:*:*
cpe:2.3:o:iij:seil_plus_firmware:1.90:*:*:*:*:*:*:*
cpe:2.3:o:iij:seil_plus_firmware:1.91:*:*:*:*:*:*:*
cpe:2.3:o:iij:seil_plus_firmware:1.92:*:*:*:*:*:*:*
cpe:2.3:o:iij:seil_plus_firmware:1.93:*:*:*:*:*:*:*
cpe:2.3:o:iij:seil_plus_firmware:1.94:*:*:*:*:*:*:*
cpe:2.3:o:iij:seil_plus_firmware:1.95:*:*:*:*:*:*:*
cpe:2.3:o:iij:seil_plus_firmware:1.96:*:*:*:*:*:*:*
cpe:2.3:o:iij:seil_plus_firmware:1.97:*:*:*:*:*:*:*
cpe:2.3:o:iij:seil_plus_firmware:1.98:*:*:*:*:*:*:*
cpe:2.3:o:iij:seil_plus_firmware:1.99:*:*:*:*:*:*:*
cpe:2.3:o:iij:seil_plus_firmware:2.01:*:*:*:*:*:*:*
cpe:2.3:o:iij:seil_plus_firmware:2.02:*:*:*:*:*:*:*
cpe:2.3:o:iij:seil_plus_firmware:2.03:*:*:*:*:*:*:*
cpe:2.3:o:iij:seil_plus_firmware:2.04:*:*:*:*:*:*:*
cpe:2.3:o:iij:seil_plus_firmware:2.05:*:*:*:*:*:*:*
cpe:2.3:o:iij:seil_plus_firmware:2.06:*:*:*:*:*:*:*
cpe:2.3:o:iij:seil_plus_firmware:2.07:*:*:*:*:*:*:*
cpe:2.3:o:iij:seil_plus_firmware:2.08:*:*:*:*:*:*:*
cpe:2.3:o:iij:seil_plus_firmware:2.09:*:*:*:*:*:*:*
cpe:2.3:o:iij:seil_plus_firmware:2.10:*:*:*:*:*:*:*
cpe:2.3:o:iij:seil_plus_firmware:2.11:*:*:*:*:*:*:*
cpe:2.3:o:iij:seil_plus_firmware:2.12:*:*:*:*:*:*:*
cpe:2.3:o:iij:seil_plus_firmware:2.13:*:*:*:*:*:*:*
cpe:2.3:o:iij:seil_plus_firmware:2.14:*:*:*:*:*:*:*
cpe:2.3:o:iij:seil_plus_firmware:2.15:*:*:*:*:*:*:*
cpe:2.3:o:iij:seil_plus_firmware:2.16:*:*:*:*:*:*:*
cpe:2.3:o:iij:seil_plus_firmware:2.17:*:*:*:*:*:*:*
cpe:2.3:o:iij:seil_plus_firmware:2.18:*:*:*:*:*:*:*
cpe:2.3:h:iij:seil_plus:-:*:*:*:*:*:*:*
cpe:2.3:o:iij:seil_b1_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:iij:seil_x1_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:iij:seil_turbo_firmware:1.82:*:*:*:*:*:*:*

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CVE-2015-0333 — Critical (CVSS 10.0): Adobe Flash Player before 13.0.0.277 and 14.x through 17.x before 17.0.0.134 on Windows and OS X and before…
CVE-2014-4121 — Critical (CVSS 10.0): Microsoft .NET Framework 2.0 SP2, 3.5, 3.5.1, 4, 4.5, 4.5.1, and 4.5.2 does not properly parse internationalized…
CVE-2014-0560 — Critical (CVSS 10.0): Use-after-free vulnerability in Adobe Reader and Acrobat 10.x before 10.1.12 and 11.x before 11.0.09 on Windows and OS…

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