CVE-2012-3017

Simatic S7 400 Cpu Firmware vulnerability

CVSS

7.8

EPSS

3.5%

EPSS pct

88th

Exploited

No known

Siemens SIMATIC S7-400 PN CPU devices with firmware 5.x allow remote attackers to cause a denial of service (defect-mode transition and service outage) via (1) malformed HTTP traffic or (2) malformed IP packets.

Affected vendor

Siemens

Affected product

Simatic S7 400 Cpu Firmware

CVSS vector

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

Weakness type (CWE)

CWE-119 — Improper Restriction of Operations within Memory Bounds

Published

2012-07-31

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-2012-3017

Confirm whether Siemens Simatic S7 400 Cpu Firmware is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2012-3017.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2012-3017

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