CVE-2014-2257

Simatic S7 1500 Cpu Firmware vulnerability

CVSS

7.8

EPSS

3.5%

EPSS pct

88th

Exploited

No known

Siemens SIMATIC S7-1500 CPU PLC devices with firmware before 1.5.0 allow remote attackers to cause a denial of service (defect-mode transition) via crafted ISO-TSAP packets.

Affected vendor

Siemens

Affected product

Simatic S7 1500 Cpu Firmware

CVSS vector

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

Published

2014-03-16

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no authentication. Successful exploitation leads to complete impact to availability.

Its EPSS score of 3.5% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 88% of all scored CVEs.

Check your external exposure to CVE-2014-2257

Confirm whether Siemens Simatic S7 1500 Cpu Firmware is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2014-2257.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2014-2257

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2014-2257 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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