CVE-2016-9158

highpriority · track · 31EPSS 0.030 · 87 %ileEUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

3.03% (87th) EPSS

CVSS 7.8 · high

Is it mine?

8 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · nvd

EPSS · scored 2026-10-22

A vulnerability has been identified in SIMATIC S7-300 CPU family (All versions), SIMATIC S7-300 CPU family (incl. related ET200 CPUs and SIPLUS variants) (All versions), SIMATIC S7-400 PN/DP V6 and below CPU family (incl. SIPLUS variants) (All versions), SIMATIC S7-400 PN/DP V7 CPU family (incl. SIPLUS variants) (All versions), SIMATIC S7-400 V6 and earlier CPU family (All versions), SIMATIC S7-400 V7 CPU family (All versions). Specially crafted packets sent to port 80/tcp could cause the affected devices to go into defect mode. A cold restart is required to recover the system.

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 · 6.9–7.8

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

v3.07.5highCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 3.6

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · ENISA EU

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondaryexploitability 3.9 · impact 3.6

v3.16.9mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:Usecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: yes · Technical Impact: partialcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-20USprimary

affected products (8)

Products and version ranges known to be affected.

Siemens AG SIMATIC S7-300 CPU family≤ All versionsenisa_euvdEU
Siemens AG SIMATIC S7-300 CPU family (incl. related ET200 CPUs and SIPLUS variants)≤ All versionsenisa_euvdEU
Siemens AG SIMATIC S7-400 PN/DP V6 and below CPU family (incl. SIPLUS variants)≤ All versionsenisa_euvdEU
Siemens AG SIMATIC S7-400 PN/DP V7 CPU family (incl. SIPLUS variants)≤ All versionsenisa_euvdEU
Siemens AG SIMATIC S7-400 V6 and earlier CPU family≤ All versionsenisa_euvdEU
Siemens AG SIMATIC S7-400 V7 CPU family≤ All versionsenisa_euvdEU
siemens simatic s7-300 cpu firmwareall versionsnvdUScpe:2.3:o:siemens:simatic_s7-300_cpu_firmware:*:*:*:*:*:*:*:*
siemens simatic s7-400 cpu firmwareall versionsnvdUScpe:2.3:o:siemens:simatic_s7-400_cpu_firmware:*:*:*:*:*:*:*:*

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd NVD CVE.org MITRE

published 2016-12-17modified 2026-06-17

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+25102 more

references (17)

External citations — patches, advisories, analysis.

scry

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