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Fencer Intel
high 7.8

CVE-2012-3016 json

Siemens SIMATIC S7-400 PN CPU devices with firmware 6 before 6.0.3 allow remote attackers to cause a denial of service (defect-mode transit…

published 2012-07-31 14 y ago modified 2026-06-16 4 mo ago also EUVD-2012-2994

cvss
7.8
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
3.5%
EPSS 3.5% chance of exploitation in 30 days, percentile 89%
public exploits
0
none known

Summary

Siemens SIMATIC S7-400 PN CPU devices with firmware 6 before 6.0.3 allow remote attackers to cause a denial of service (defect-mode transition and service outage) via crafted ICMP packets.

Patch / fix

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-12-212-02 updated cvss 7.8

Siemens SIMATIC S7-400 PN CPU DoS

  • Siemens CPU 412-2 PN (6ES7412-2EK06-0AB0) Siemens CPU 414-3 PN/DP (6ES7414-3EM06-0AB0) Siemens CPU 414F-3 PN/DP (6ES7414-3FM06-0AB0) Siemens CPU 416-3 PN/DP (6ES7416-3ES06-0AB0) Siemens CPU 416F-3 PN (6ES7416-3FS06-0AB0) Siemens S7-400 CPU family 6.0.1, 6.0.2
    affected: mitigation “Siemens is not providing a firmware update for SIMATIC S7-400 V5 PN CPUs because this version has reached end-of-life and has been discontinued.”

From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf

Exploit prediction

3.46% chance of exploitation in the next 30 days, higher than 89% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 2.0 7.8 AV:N/AC:L/Au:N/C:N/I:N/A:C

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.