CVE-2014-5074

7.1 HIGH 10% exploit odds Fix listed Denial of service Device

What it is

Siemens SIMATIC S7-1500 CPU devices with firmware before 1.6 allow remote attackers to cause a denial of service (device restart and STOP transition) via crafted TCP packets.

At a glance

Exploitability: Can be exploited over the network without logging in. High risk of service disruption.
Exploit odds: 9.7% chance of exploitation in the next 30 days (EPSS).
Fix: A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

2014-08-17 23:55 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-06-17 00:10 UTC Last updatedMost recent change to the record

Why it ranks here

Exploited in the wild: no, CISA does not list it.
Exploit odds: 9.7% in the next 30 days (EPSS).
Severity: 7.1 HIGH (CVSS).
Fix: a patch or advisory is linked.

Details

Published: 2014-08-17 23:55 UTC
Last modified: 2026-06-17 00:10 UTC
Exploit probability: 9.7% · EPSS, next 30 days
Record status: Modified

Affected

Siemens Simatic s7-1500 Cpu Firmware ≤ 1.5.1
Siemens Simatic s7-1500 Cpu Firmware 1.0.1
Siemens Simatic s7-1500 Cpu Firmware 1.1.0
Siemens Simatic s7-1500 Cpu Firmware 1.1.1
Siemens Simatic s7-1500 Cpu Firmware 1.1.2
Siemens Simatic s7-1500 Cpu Firmware 1.5
Siemens Simatic s7-1511-1 Pn Cpu
Siemens Simatic s7-1513-1 Pn Cpu

Attack profile CVSS 2.0 · 7.1

Attack vector: Network
Complexity: Medium
Authentication: None
Confidentiality: None
Integrity: None
Availability: Complete

Raw vector

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

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Fix and advisories

References

NVD record · CVE.org record