How severe is CVE-2013-4709?

CVE-2013-4709 has a CVSS 2.0 base score of 6.8, rated medium severity.

Is CVE-2013-4709 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (84th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2013-4709?

CVE-2013-4709 primarily affects Iij Seil X2 Firmware. In total, 18 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2013-4709?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2013-4709 published?

CVE-2013-4709 was published on 2013-09-20 and last updated on 2026-06-16.

CVE-2013-4709

CVE-2013-4709 is a medium-severity vulnerability in Iij Seil X2 Firmware with a CVSS 2.0 base score of 6.8. 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-119.

Key facts

Severity: Medium (CVSS 2.0 base score 6.8)
EPSS exploit prediction: 3% (84th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-119
Affected product: Iij Seil X2 Firmware
Published: 2013-09-20
Last modified: 2026-06-16

Description

Buffer overflow in the PPP Access Concentrator (PPPAC) on the SEIL/x86 with firmware before 2.82, SEIL/X1 with firmware before 4.32, SEIL/X2 with firmware before 4.32, SEIL/B1 with firmware before 4.32, SEIL/Turbo with firmware before 2.16, and SEIL/neu 2FE Plus with firmware before 2.16 allows remote attackers to execute arbitrary code via a crafted L2TP message.

Frequently asked questions

What is CVE-2013-4709?: Buffer overflow in the PPP Access Concentrator (PPPAC) on the SEIL/x86 with firmware before 2.82, SEIL/X1 with firmware before 4.32, SEIL/X2 with firmware before 4.32, SEIL/B1 with firmware before 4.32, SEIL/Turbo with firmware before 2.16, and SEIL/neu 2FE Plus with firmware before 2.16 allows remote attackers to execute arbitrary code via a crafted L2TP message.
How severe is CVE-2013-4709?: CVE-2013-4709 has a CVSS 2.0 base score of 6.8, rated medium severity.
Is CVE-2013-4709 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (84th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2013-4709?: CVE-2013-4709 primarily affects Iij Seil X2 Firmware. In total, 18 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2013-4709?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2013-4709 published?: CVE-2013-4709 was published on 2013-09-20 and last updated on 2026-06-16.

References

Affected products (18)

cpe:2.3:o:iij:seil_x2_firmware:1.00:*:*:*:*:*:*:*
cpe:2.3:o:iij:seil_x2_firmware:4.31:*:*:*:*:*:*:*
cpe:2.3:h:iij:seil\/x2:*:*:*:*:*:*:*:*
cpe:2.3:o:iij:seil\%2fturbo_firmware:2.05:*:*:*:*:*:*:*
cpe:2.3:o:iij:seil\%2fturbo_firmware:2.15:*:*:*:*:*:*:*
cpe:2.3:h:iij:seil\/turbo:*:*:*:*:*:*:*:*
cpe:2.3:o:iij:seil\%2fneu_2fe_plus_firmware:2.05:*:*:*:*:*:*:*
cpe:2.3:o:iij:seil\%2fneu_2fe_plus_firmware:2.15:*:*:*:*:*:*:*
cpe:2.3:h:iij:seil\/neu_2fe_plus:*:*:*:*:*:*:*:*
cpe:2.3:o:iij:seil\%2fb1_firmware:1.00:*:*:*:*:*:*:*
cpe:2.3:o:iij:seil\%2fb1_firmware:4.31:*:*:*:*:*:*:*
cpe:2.3:h:iij:seil\/b1:*:*:*:*:*:*:*:*
cpe:2.3:o:iij:seil\%2fx86_firmware:1.00:*:*:*:*:*:*:*
cpe:2.3:o:iij:seil\%2fx86_firmware:2.81:*:*:*:*:*:*:*
cpe:2.3:h:iij:seil\/x86:*:*:*:*:*:*:*:*
cpe:2.3:o:iij:seil\%2fx1_firmware:1.00:*:*:*:*:*:*:*
cpe:2.3:o:iij:seil\%2fx1_firmware:4.31:*:*:*:*:*:*:*
cpe:2.3:h:iij:seil\/x1:*:*:*:*:*:*:*:*

More vulnerabilities in Iij Seil X2 Firmware

CVE-2014-7256 — High (CVSS 7.8): The (1) PPP Access Concentrator (PPPAC) and (2) Dial-Up Networking Internet Initiative Japan Inc. SEIL series routers…
CVE-2014-7255 — High (CVSS 7.5): 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…

All CVEs affecting Iij Seil X2 Firmware →

Other CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer) vulnerabilities

CVE-2026-2778 — Critical (CVSS 10.0): Sandbox escape due to incorrect boundary conditions in the DOM: Core & HTML component. This vulnerability was fixed in…
CVE-2026-2776 — Critical (CVSS 10.0): Sandbox escape due to incorrect boundary conditions in the Telemetry component in External Software. This vulnerability…
CVE-2025-1866 — Critical (CVSS 10.0): Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability in warmcat libwebsockets allows…
CVE-2022-27625 — Critical (CVSS 10.0): A vulnerability regarding improper restriction of operations within the bounds of a memory buffer is found in the…
CVE-2022-27624 — Critical (CVSS 10.0): A vulnerability regarding improper restriction of operations within the bounds of a memory buffer is found in the…
CVE-2020-11896 — Critical (CVSS 10.0): The Treck TCP/IP stack before 6.0.1.66 allows Remote Code Execution, related to IPv4 tunneling.

Browse all CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer) vulnerabilities →