How severe is CVE-2014-8478?

CVE-2014-8478 has a CVSS 2.0 base score of 7.8, rated high severity.

Is CVE-2014-8478 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (80th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2014-8478?

CVE-2014-8478 primarily affects Siemens Scalance X-300 Series Firmware. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2014-8478?

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-2014-8478 published?

CVE-2014-8478 was published on 2015-01-21 and last updated on 2026-06-17.

CVE-2014-8478

CVE-2014-8478 is a high-severity vulnerability in Siemens Scalance X-300 Series 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-22.

Key facts

Severity: High (CVSS 2.0 base score 7.8)
EPSS exploit prediction: 2% (80th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-22
Affected product: Siemens Scalance X-300 Series Firmware
Published: 2015-01-21
Last modified: 2026-06-17

Description

The web server on Siemens SCALANCE X-300 switches with firmware before 4.0 and SCALANCE X 408 switches with firmware before 4.0 allows remote attackers to cause a denial of service (reboot) via malformed HTTP requests.

Frequently asked questions

What is CVE-2014-8478?: The web server on Siemens SCALANCE X-300 switches with firmware before 4.0 and SCALANCE X 408 switches with firmware before 4.0 allows remote attackers to cause a denial of service (reboot) via malformed HTTP requests.
How severe is CVE-2014-8478?: CVE-2014-8478 has a CVSS 2.0 base score of 7.8, rated high severity.
Is CVE-2014-8478 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (80th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2014-8478?: CVE-2014-8478 primarily affects Siemens Scalance X-300 Series Firmware. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2014-8478?: 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-2014-8478 published?: CVE-2014-8478 was published on 2015-01-21 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:siemens:scalance_x-300_series_firmware:*:*:*:*:*:*:*:*
cpe:2.3:a:siemens:scalance_x-408_firmware:*:*:*:*:*:*:*:*

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