CVE-2013-0700

What it is

Siemens SIMATIC S7-1200 PLCs 2.x and 3.x allow remote attackers to cause a denial of service (defect-mode transition and control outage) via crafted packets to TCP port 102 (aka the ISO-TSAP port).

At a glance

Exploitability

Can be exploited over the network without logging in. High risk of service disruption.

Exploit odds

2.4% chance of exploitation in the next 30 days (EPSS).

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2013-04-22 03:27 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-16 23:49 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 2.4% in the next 30 days (EPSS).
• Severity: 7.8 HIGH (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2013-04-22 03:27 UTC

Last modified

2026-06-16 23:49 UTC

Exploit probability

2.4% · EPSS, next 30 days

Record status

Modified

Affected

• Siemens Simatic s7-1200 Firmware < 4.0
• Siemens Simatic s7-1200 Cpu 1211c Firmware < 4.0
• Siemens Simatic s7-1200 Cpu 1212c Firmware < 4.0
• Siemens Simatic s7-1200 Cpu 1212fc Firmware < 4.0
• Siemens Simatic s7-1200 Cpu 1214 Fc Firmware < 4.0
• Siemens Simatic s7-1200 Cpu 1214c Firmware < 4.0
• Siemens Simatic s7-1200 Cpu 1215 Fc Firmware < 4.0
• Siemens Simatic s7-1200 Cpu 1215c Firmware < 4.0

Attack profile CVSS 2.0 · 7.8

Attack vector

Network

Complexity

Low

Authentication

None

Confidentiality

None

Integrity

None

Availability

Complete

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