CVE-2014-2256

highpriority · track · 32EPSS 0.037 · 90 %ileEURUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

3.68% (90th) EPSS

CVSS 7.8 · high

Is it mine?

11 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · fstec_bdu · cisa_csaf_ot

EPSS · scored 2026-10-23

Siemens SIMATIC S7-1200 CPU PLC devices with firmware before 4.0 allow remote attackers to cause a denial of service (defect-mode transition) via crafted ISO-TSAP packets, a different vulnerability than CVE-2014-2257.

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

No vendor fix yet; a mitigation is available.

MitigationSIMATIC S7-1200 CPU familycisa_csaf_ot
Siemens addresses all these issues in a security advisory that can be found at the following location: (http://www.siemens.com/innovation/pool/de/forschungsfelder/siemens_security_advisory_ssa-654382.pdf)
http://www.siemens.com/innovation/pool/de/forschungsfelder/siemens_security_advisory_ssa-654382.pdf

cvss

Technical severity, 0–10. One row per scoring source.

7.8

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.6–7.8

v2.07.8highAV:N/AC:L/Au:N/C:N/I:N/A:Cprimary · NVD / NIST USexploitability 10 · impact 6.9

v2.07.8highAV:N/AC:L/Au:N/C:N/I:N/A:Csecondary · CISA US

v2.07.8highAV:N/AC:L/Au:N/C:N/I:N/A:Csecondary · FSTEC (BDU) RU

v2.06.6mediumAV:N/AC:L/Au:N/C:N/I:N/A:C/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-399USprimaryCWE-404USCWE-404US

affected products (11)

Products and version ranges known to be affected.

Siemens SIMATIC S7-1200 CPU family: <V4.0all versionscisa_csaf_otUS
Siemens SIMATIC S7-1200 CPU family< V4.0cisa_csaf_otUS
n/a n/a≤ n/aenisa_euvdEU
Siemens AG Микропрограммное обеспечение программируемого логического контроллера Siemens Simatic S7-1200≤ 4fstec_bduRU
siemens simatic s7 cpu 1200 firmware≤ 3.0.2nvdUScpe:2.3:o:siemens:simatic_s7_cpu_1200_firmware:*:*:*:*:*:*:*:*
siemens simatic s7 cpu 1200 firmware= 3.0nvdUScpe:2.3:o:siemens:simatic_s7_cpu_1200_firmware:*:*:*:*:*:*:*:*
siemens simatic s7 cpu 1212call versionsnvdUScpe:2.3:h:siemens:simatic_s7_cpu_1212c:*:*:*:*:*:*:*:*
siemens simatic s7 cpu 1214call versionsnvdUScpe:2.3:h:siemens:simatic_s7_cpu_1214c:*:*:*:*:*:*:*:*
siemens simatic s7 cpu 1215call versionsnvdUScpe:2.3:h:siemens:simatic_s7_cpu_1215c:*:*:*:*:*:*:*:*
siemens simatic s7 cpu 1217call versionsnvdUScpe:2.3:h:siemens:simatic_s7_cpu_1217c:*:*:*:*:*:*:*:*
siemens simatic s7 cpu-1211call versionsnvdUScpe:2.3:h:siemens:simatic_s7_cpu-1211c:*:*:*:*:*:*:*:*

advisories (1)

Vendor and ecosystem advisories describing this.

ICSA-14-079-02Siemens SIMATIC S7-1200 Vulnerabilities2014-12-21icsa · cisa_csaf_otUS
This CSAF advisory was extracted from unstructured data and may contain inaccuracies. If you notice any errors, please reach out to the designated contact at CISA CSAF: central@cisa.dhs.gov

also known as (6)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu cisa_csaf_ot nvd NVD CVE.org MITRE

published 2014-03-24modified 2026-06-17

related (3,726)

Related entries.

ID	severity	EPSS	exploitable	published
CVE-2018-0180US	medium5.9OT critical	4.93% (92nd)	KEV	2018-03-28
Multiple vulnerabilities in the Login Enhancements (Login Block) feature of Cisco IOS Software could allow an unauthenticated, remote attacker to trigger a reload of an affected sy…
CVE-2018-0179US	medium5.9OT critical	4.93% (92nd)	KEV	2018-03-28
Multiple vulnerabilities in the Login Enhancements (Login Block) feature of Cisco IOS Software could allow an unauthenticated, remote attacker to trigger a reload of an affected sy…
CVE-2018-0161US	medium6.3OT critical	4.12% (91st)	KEV	2018-03-28
A vulnerability in the Simple Network Management Protocol (SNMP) subsystem of Cisco IOS Software running on certain models of Cisco Catalyst Switches could allow an authenticated,…
CVE-2018-0156US	high7.5OT critical	9.36% (95th)	KEV	2018-03-28
A vulnerability in the Smart Install feature of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to trigger a reload of an affected devi…
CVE-2018-0154US	high7.5OT critical	7.07% (94th)	KEV	2018-03-28
A vulnerability in the crypto engine of the Cisco Integrated Services Module for VPN (ISM-VPN) running Cisco IOS Software could allow an unauthenticated, remote attacker to cause a…

+3721 more

references (9)

External citations — patches, advisories, analysis.

scry

Attackers weaponise vulnerabilities like this against internet-exposed services. See what is exposed on your perimeter with a free passive scan.

Free scan