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CVE-2014-8478

23
FAUCET Score

CVE-2014-8478 describes a denial-of-service vulnerability affecting Siemens SCALANCE X-300 and X 408 switches with firmware versions prior to 4.0. Remote attackers can exploit this flaw by sending malformed HTTP requests to the device's web server, causing it to reboot. This vulnerability has a CVSS score of 7.8, indicating high severity, and can be exploited remotely with low attack complexity, resulting in complete availability impact. There is no evidence of active exploitation, and public exploit code for Metasploit, Nuclei, or ExploitDB is unavailable. Despite limited community discussion, the vulnerability received media coverage from SecurityWeek.

Impacted Technologies

VendorProductVersion(s)CPE
<= 3.9.3CPE matchmatch criteria
cpe:2.3:a:siemens:scalance_x-300_series_firmware:*:*:*:*:*:*:*:*
<= 3.9.3CPE matchmatch criteria
cpe:2.3:a:siemens:scalance_x-408_firmware:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

7.8HIGH

AV:N/AC:L/Au:N/C:N/I:N/A:C

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
6.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
2.20%
Probability of exploitation in next 30 days
EPSS Percentile
80.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0220 is in the 66th percentile among its peer group of 51,506 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

cert-portal.siemens.com / productcert/pdf/ssa-321046.pdf
siemens.com / innovation/pool/de/forschungsfelder/siemens_security_advisory_ssa-321046.pdf
Vendor Advisory