CVE-2018-16557

highpriority · track · 31EPSS 0.008 · 57 %ileDEEURUUS
grimoire priorityP2 · Scheduled
Exploitable?
—
no known exploitation
Likely / severe?
0.82% (57th) EPSS
CVSS 7.8 · high
Is it mine?
94 products
Check your exposure
Who says so?
5 sources
cnnvd · enisa_euvd · fstec_bdu · cisa_csaf_ot

EPSS · scored 2026-10-23

A vulnerability has been identified in SIMATIC S7-400 CPU 412-1 DP V7 (All versions), SIMATIC S7-400 CPU 412-2 DP V7 (All versions), SIMATIC S7-400 CPU 414-2 DP V7 (All versions), SIMATIC S7-400 CPU 414-3 DP V7 (All versions), SIMATIC S7-400 CPU 414-3 PN/DP V7 (All versions < V7.0.3), SIMATIC S7-400 CPU 414F-3 PN/DP V7 (All versions < V7.0.3), SIMATIC S7-400 CPU 416-2 DP V7 (All versions), SIMATIC S7-400 CPU 416-3 DP V7 (All versions), SIMATIC S7-400 CPU 416-3 PN/DP V7 (All versions < V7.0.3), SIMATIC S7-400 CPU 416F-2 DP V7 (All versions), SIMATIC S7-400 CPU 416F-3 PN/DP V7 (All versions < V7.0.3), SIMATIC S7-400 CPU 417-4 DP V7 (All versions), SIMATIC S7-400 CPU 412-2 PN V7 (All versions < V7.0.3), SIMATIC S7-400 H V4.5 and below CPU family (incl. SIPLUS variants) (All versions), SIMATIC S7-400 H V6 CPU family (incl. SIPLUS variants) (All versions < V6.0.9), SIMATIC S7-400 PN/DP V6 and below CPU family (incl. SIPLUS variants) (All versions), SIMATIC S7-410 CPU family (incl. SIPLUS variants) (All versions < V8.2.1), SIPLUS S7-400 CPU 414-3 PN/DP V7 (All versions < V7.0.3), SIPLUS S7-400 CPU 416-3 PN/DP V7 (All versions < V7.0.3), SIPLUS S7-400 CPU 416-3 V7 (All versions), SIPLUS S7-400 CPU 417-4 V7 (All versions). Sending of specially crafted packets to port 102/tcp via Ethernet interface via PROFIBUS or Multi Point Interfaces (MPI) could cause a denial of service condition on affected devices. Flashing with a firmware image may be required to recover the CPU. Successful exploitation requires an attacker to have network access to port 102/tcp via Ethernet interface or to be able to send messages via PROFIBUS or Multi Point Interfaces (MPI) to the device. No user interaction is required. If no access protection is configured, no privileges are required to exploit the security vulnerability. The vulnerability could allow causing a denial of service condition of the core functionality of the CPU, compromising the availability of the system.

01

remediations

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

A vendor fix is available.

  • Fixed SIMATIC S7-400 CPU 414-3 PN/DP V7 (6ES7414-3EM07-0AB0)siemens_psirt

    Update to V7.0.3 or later version

    https://support.industry.siemens.com/cs/ww/en/view/109752685/
  • Fixed SIMATIC S7-400 CPU 414F-3 PN/DP V7 (6ES7414-3FM07-0AB0)siemens_psirt

    Update to V7.0.3 or later version

    https://support.industry.siemens.com/cs/ww/en/view/109752685/
  • Fixed SIMATIC S7-400 CPU 416-3 PN/DP V7 (6ES7416-3ES07-0AB0)siemens_psirt

    Update to V7.0.3 or later version

    https://support.industry.siemens.com/cs/ww/en/view/109752685/
  • Fixed SIMATIC S7-400 CPU 416F-3 PN/DP V7 (6ES7416-3FS07-0AB0)siemens_psirt

    Update to V7.0.3 or later version

    https://support.industry.siemens.com/cs/ww/en/view/109752685/
  • FixedSIMATIC S7-400 CPU 412-2 PN V7 (6ES7412-2EK07-0AB0)siemens_psirt

    Update to V7.0.3 or later version

    https://support.industry.siemens.com/cs/ww/en/view/109752685/
  • FixedSIMATIC S7-400 H V6 CPU family (incl. SIPLUS variants)siemens_psirt

    Update to V6.0.9 or later version

    https://support.industry.siemens.com/cs/ww/en/view/109474550/
  • FixedSIMATIC S7-410 CPU family (incl. SIPLUS variants)siemens_psirt

    Update to V8.2.1 or later version

    https://support.industry.siemens.com/cs/ww/en/view/109476571/
  • FixedSIPLUS S7-400 CPU 414-3 PN/DP V7 (6AG1414-3EM07-7AB0)siemens_psirt

    Update to V7.0.3 or later version

    https://support.industry.siemens.com/cs/ww/en/view/109752685/
  • FixedSIPLUS S7-400 CPU 416-3 PN/DP V7 (6AG1416-3ES07-7AB0)siemens_psirt

    Update to V7.0.3 or later version

    https://support.industry.siemens.com/cs/ww/en/view/109752685/
  • Fixed SIMATIC S7-400 CPU 414-3 PN/DP V7 (6ES7414-3EM07-0AB0)cisa_csaf_ot

    Update to V7.0.3 or later version

    https://support.industry.siemens.com/cs/ww/en/view/109752685/
  • Fixed SIMATIC S7-400 CPU 414F-3 PN/DP V7 (6ES7414-3FM07-0AB0)cisa_csaf_ot

    Update to V7.0.3 or later version

    https://support.industry.siemens.com/cs/ww/en/view/109752685/
  • Fixed SIMATIC S7-400 CPU 416-3 PN/DP V7 (6ES7416-3ES07-0AB0)cisa_csaf_ot

    Update to V7.0.3 or later version

    https://support.industry.siemens.com/cs/ww/en/view/109752685/
  • Fixed SIMATIC S7-400 CPU 416F-3 PN/DP V7 (6ES7416-3FS07-0AB0)cisa_csaf_ot

    Update to V7.0.3 or later version

    https://support.industry.siemens.com/cs/ww/en/view/109752685/
  • FixedSIMATIC S7-400 CPU 412-2 PN V7 (6ES7412-2EK07-0AB0)cisa_csaf_ot

    Update to V7.0.3 or later version

    https://support.industry.siemens.com/cs/ww/en/view/109752685/
  • FixedSIMATIC S7-400 H V6 CPU family (incl. SIPLUS variants)cisa_csaf_ot

    Update to V6.0.9 or later version

    https://support.industry.siemens.com/cs/ww/en/view/109474550/
  • FixedSIMATIC S7-410 CPU family (incl. SIPLUS variants)cisa_csaf_ot

    Update to V8.2.1 or later version

    https://support.industry.siemens.com/cs/ww/en/view/109476571/
  • FixedSIPLUS S7-400 CPU 414-3 PN/DP V7 (6AG1414-3EM07-7AB0)cisa_csaf_ot

    Update to V7.0.3 or later version

    https://support.industry.siemens.com/cs/ww/en/view/109752685/
  • FixedSIPLUS S7-400 CPU 416-3 PN/DP V7 (6AG1416-3ES07-7AB0)cisa_csaf_ot

    Update to V7.0.3 or later version

    https://support.industry.siemens.com/cs/ww/en/view/109752685/
  • Mitigation SIMATIC S7-400 CPU 412-1 DP V7 (6ES7412-1XJ07-0AB0)siemens_psirt

    CVE-2018-16557: Configure protection level 3 (read/write protection)

  • Mitigation SIMATIC S7-400 CPU 412-2 DP V7 (6ES7412-2XK07-0AB0)siemens_psirt

    CVE-2018-16557: Configure protection level 3 (read/write protection)

  • Mitigation SIMATIC S7-400 CPU 414-2 DP V7 (6ES7414-2XL07-0AB0)siemens_psirt

    CVE-2018-16557: Configure protection level 3 (read/write protection)

  • Mitigation SIMATIC S7-400 CPU 414-3 DP V7 (6ES7414-3XM07-0AB0)siemens_psirt

    CVE-2018-16557: Configure protection level 3 (read/write protection)

  • Mitigation SIMATIC S7-400 CPU 414-3 PN/DP V7 (6ES7414-3EM07-0AB0)siemens_psirt

    CVE-2018-16557: Configure protection level 3 (read/write protection)

  • Mitigation SIMATIC S7-400 CPU 414F-3 PN/DP V7 (6ES7414-3FM07-0AB0)siemens_psirt

    CVE-2018-16557: Configure protection level 3 (read/write protection)

  • Mitigation SIMATIC S7-400 CPU 416-2 DP V7 (6ES7416-2XP07-0AB0)siemens_psirt

    CVE-2018-16557: Configure protection level 3 (read/write protection)

  • Mitigation SIMATIC S7-400 CPU 416-3 DP V7 (6ES7416-3XS07-0AB0)siemens_psirt

    CVE-2018-16557: Configure protection level 3 (read/write protection)

  • Mitigation SIMATIC S7-400 CPU 416-3 PN/DP V7 (6ES7416-3ES07-0AB0)siemens_psirt

    CVE-2018-16557: Configure protection level 3 (read/write protection)

  • Mitigation SIMATIC S7-400 CPU 416F-2 DP V7 (6ES7416-2FP07-0AB0)siemens_psirt

    CVE-2018-16557: Configure protection level 3 (read/write protection)

  • Mitigation SIMATIC S7-400 CPU 416F-3 PN/DP V7 (6ES7416-3FS07-0AB0)siemens_psirt

    CVE-2018-16557: Configure protection level 3 (read/write protection)

  • Mitigation SIMATIC S7-400 CPU 417-4 DP V7 (6ES7417-4XT07-0AB0)siemens_psirt

    CVE-2018-16557: Configure protection level 3 (read/write protection)

  • MitigationSIMATIC S7-400 CPU 412-2 PN V7 (6ES7412-2EK07-0AB0)siemens_psirt

    CVE-2018-16557: Configure protection level 3 (read/write protection)

  • MitigationSIMATIC S7-400 H V4.5 and below CPU family (incl. SIPLUS variants)siemens_psirt

    CVE-2018-16557: Configure protection level 3 (read/write protection)

  • MitigationSIMATIC S7-400 H V6 CPU family (incl. SIPLUS variants)siemens_psirt

    CVE-2018-16557: Configure protection level 3 (read/write protection)

  • MitigationSIMATIC S7-400 PN/DP V6 and below CPU family (incl. SIPLUS variants)siemens_psirt

    CVE-2018-16557: Configure protection level 3 (read/write protection)

  • MitigationSIMATIC S7-410 CPU family (incl. SIPLUS variants)siemens_psirt

    Activate Field Interface Security in PCS 7 V9.0, and use a SIMATIC/SIPLUS CP443-1 Adv. to communicate with ES/OS

  • MitigationSIPLUS S7-400 CPU 414-3 PN/DP V7 (6AG1414-3EM07-7AB0)siemens_psirt

    CVE-2018-16557: Configure protection level 3 (read/write protection)

  • MitigationSIPLUS S7-400 CPU 416-3 PN/DP V7 (6AG1416-3ES07-7AB0)siemens_psirt

    CVE-2018-16557: Configure protection level 3 (read/write protection)

  • MitigationSIPLUS S7-400 CPU 416-3 V7 (6AG1416-3XS07-7AB0)siemens_psirt

    CVE-2018-16557: Configure protection level 3 (read/write protection)

  • MitigationSIPLUS S7-400 CPU 417-4 V7 (6AG1417-4XT07-7AB0)siemens_psirt

    CVE-2018-16557: Configure protection level 3 (read/write protection)

  • Mitigation SIMATIC S7-400 CPU 412-1 DP V7 (6ES7412-1XJ07-0AB0)cisa_csaf_ot

    CVE-2018-16557: Configure protection level 3 (read/write protection)

  • Mitigation SIMATIC S7-400 CPU 412-2 DP V7 (6ES7412-2XK07-0AB0)cisa_csaf_ot

    CVE-2018-16557: Configure protection level 3 (read/write protection)

  • Mitigation SIMATIC S7-400 CPU 414-2 DP V7 (6ES7414-2XL07-0AB0)cisa_csaf_ot

    CVE-2018-16557: Configure protection level 3 (read/write protection)

  • Mitigation SIMATIC S7-400 CPU 414-3 DP V7 (6ES7414-3XM07-0AB0)cisa_csaf_ot

    CVE-2018-16557: Configure protection level 3 (read/write protection)

  • Mitigation SIMATIC S7-400 CPU 414-3 PN/DP V7 (6ES7414-3EM07-0AB0)cisa_csaf_ot

    CVE-2018-16557: Configure protection level 3 (read/write protection)

  • Mitigation SIMATIC S7-400 CPU 414F-3 PN/DP V7 (6ES7414-3FM07-0AB0)cisa_csaf_ot

    CVE-2018-16557: Configure protection level 3 (read/write protection)

  • Mitigation SIMATIC S7-400 CPU 416-2 DP V7 (6ES7416-2XP07-0AB0)cisa_csaf_ot

    CVE-2018-16557: Configure protection level 3 (read/write protection)

  • Mitigation SIMATIC S7-400 CPU 416-3 DP V7 (6ES7416-3XS07-0AB0)cisa_csaf_ot

    CVE-2018-16557: Configure protection level 3 (read/write protection)

  • Mitigation SIMATIC S7-400 CPU 416-3 PN/DP V7 (6ES7416-3ES07-0AB0)cisa_csaf_ot

    CVE-2018-16557: Configure protection level 3 (read/write protection)

  • Mitigation SIMATIC S7-400 CPU 416F-2 DP V7 (6ES7416-2FP07-0AB0)cisa_csaf_ot

    CVE-2018-16557: Configure protection level 3 (read/write protection)

  • Mitigation SIMATIC S7-400 CPU 416F-3 PN/DP V7 (6ES7416-3FS07-0AB0)cisa_csaf_ot

    CVE-2018-16557: Configure protection level 3 (read/write protection)

  • Mitigation SIMATIC S7-400 CPU 417-4 DP V7 (6ES7417-4XT07-0AB0)cisa_csaf_ot

    CVE-2018-16557: Configure protection level 3 (read/write protection)

  • MitigationSIMATIC S7-400 CPU 412-2 PN V7 (6ES7412-2EK07-0AB0)cisa_csaf_ot

    CVE-2018-16557: Configure protection level 3 (read/write protection)

  • MitigationSIMATIC S7-400 H V4.5 and below CPU family (incl. SIPLUS variants)cisa_csaf_ot

    CVE-2018-16557: Configure protection level 3 (read/write protection)

  • MitigationSIMATIC S7-400 H V6 CPU family (incl. SIPLUS variants)cisa_csaf_ot

    CVE-2018-16557: Configure protection level 3 (read/write protection)

  • MitigationSIMATIC S7-400 PN/DP V6 and below CPU family (incl. SIPLUS variants)cisa_csaf_ot

    CVE-2018-16557: Configure protection level 3 (read/write protection)

  • MitigationSIMATIC S7-410 CPU family (incl. SIPLUS variants)cisa_csaf_ot

    Activate Field Interface Security in PCS 7 V9.0, and use a SIMATIC/SIPLUS CP443-1 Adv. to communicate with ES/OS

  • MitigationSIPLUS S7-400 CPU 414-3 PN/DP V7 (6AG1414-3EM07-7AB0)cisa_csaf_ot

    CVE-2018-16557: Configure protection level 3 (read/write protection)

  • MitigationSIPLUS S7-400 CPU 416-3 PN/DP V7 (6AG1416-3ES07-7AB0)cisa_csaf_ot

    CVE-2018-16557: Configure protection level 3 (read/write protection)

  • MitigationSIPLUS S7-400 CPU 416-3 V7 (6AG1416-3XS07-7AB0)cisa_csaf_ot

    CVE-2018-16557: Configure protection level 3 (read/write protection)

  • MitigationSIPLUS S7-400 CPU 417-4 V7 (6AG1417-4XT07-7AB0)cisa_csaf_ot

    CVE-2018-16557: Configure protection level 3 (read/write protection)

  • No fix planned SIMATIC S7-400 CPU 412-1 DP V7 (6ES7412-1XJ07-0AB0)siemens_psirt

    Currently no fix is planned

  • No fix planned SIMATIC S7-400 CPU 412-2 DP V7 (6ES7412-2XK07-0AB0)siemens_psirt

    Currently no fix is planned

  • No fix planned SIMATIC S7-400 CPU 414-2 DP V7 (6ES7414-2XL07-0AB0)siemens_psirt

    Currently no fix is planned

  • No fix planned SIMATIC S7-400 CPU 414-3 DP V7 (6ES7414-3XM07-0AB0)siemens_psirt

    Currently no fix is planned

  • No fix planned SIMATIC S7-400 CPU 416-2 DP V7 (6ES7416-2XP07-0AB0)siemens_psirt

    Currently no fix is planned

  • No fix planned SIMATIC S7-400 CPU 416-3 DP V7 (6ES7416-3XS07-0AB0)siemens_psirt

    Currently no fix is planned

  • No fix planned SIMATIC S7-400 CPU 416F-2 DP V7 (6ES7416-2FP07-0AB0)siemens_psirt

    Currently no fix is planned

  • No fix planned SIMATIC S7-400 CPU 417-4 DP V7 (6ES7417-4XT07-0AB0)siemens_psirt

    Currently no fix is planned

  • No fix plannedSIMATIC S7-400 H V4.5 and below CPU family (incl. SIPLUS variants)siemens_psirt

    Currently no fix is planned

  • No fix plannedSIMATIC S7-400 PN/DP V6 and below CPU family (incl. SIPLUS variants)siemens_psirt

    Currently no fix is planned

  • No fix plannedSIPLUS S7-400 CPU 416-3 V7 (6AG1416-3XS07-7AB0)siemens_psirt

    Currently no fix is planned

  • No fix plannedSIPLUS S7-400 CPU 417-4 V7 (6AG1417-4XT07-7AB0)siemens_psirt

    Currently no fix is planned

  • No fix planned SIMATIC S7-400 CPU 412-1 DP V7 (6ES7412-1XJ07-0AB0)cisa_csaf_ot

    Currently no fix is planned

  • No fix planned SIMATIC S7-400 CPU 412-2 DP V7 (6ES7412-2XK07-0AB0)cisa_csaf_ot

    Currently no fix is planned

  • No fix planned SIMATIC S7-400 CPU 414-2 DP V7 (6ES7414-2XL07-0AB0)cisa_csaf_ot

    Currently no fix is planned

  • No fix planned SIMATIC S7-400 CPU 414-3 DP V7 (6ES7414-3XM07-0AB0)cisa_csaf_ot

    Currently no fix is planned

  • No fix planned SIMATIC S7-400 CPU 416-2 DP V7 (6ES7416-2XP07-0AB0)cisa_csaf_ot

    Currently no fix is planned

  • No fix planned SIMATIC S7-400 CPU 416-3 DP V7 (6ES7416-3XS07-0AB0)cisa_csaf_ot

    Currently no fix is planned

  • No fix planned SIMATIC S7-400 CPU 416F-2 DP V7 (6ES7416-2FP07-0AB0)cisa_csaf_ot

    Currently no fix is planned

  • No fix planned SIMATIC S7-400 CPU 417-4 DP V7 (6ES7417-4XT07-0AB0)cisa_csaf_ot

    Currently no fix is planned

  • No fix plannedSIMATIC S7-400 H V4.5 and below CPU family (incl. SIPLUS variants)cisa_csaf_ot

    Currently no fix is planned

  • No fix plannedSIMATIC S7-400 PN/DP V6 and below CPU family (incl. SIPLUS variants)cisa_csaf_ot

    Currently no fix is planned

  • No fix plannedSIPLUS S7-400 CPU 416-3 V7 (6AG1416-3XS07-7AB0)cisa_csaf_ot

    Currently no fix is planned

  • No fix plannedSIPLUS S7-400 CPU 417-4 V7 (6AG1417-4XT07-7AB0)cisa_csaf_ot

    Currently no fix is planned

02

cvss

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

8.2
010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.6–8.2

v2.07.8highAV:N/AC:L/Au:N/C:N/I:N/A:Cprimary · NVD / NIST USexploitability 10 · impact 6.9
v2.06.6mediumAV:N/AC:L/Au:N/C:N/I:N/A:C/E:Usecondary · CVSS-BT (t0sche)
v3.18.2highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H/E:P/RL:O/RC:Csecondary · CISA US
v3.18.2highAV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:Hsecondary · FSTEC (BDU) RU
v3.18.2highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H/E:P/RL:O/RC:Csecondary · ENISA EU
v3.18.2highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:Hsecondary · productcert@siemens.com DEexploitability 3.9 · impact 4.2
v3.18.2highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H/E:P/RL:O/RC:Csecondary · Siemens ProductCERT DE
v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · NVD / NIST USexploitability 3.9 · impact 3.6
03

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-20USCWE-347USCWE-347USCWE-347US
04

affected products (94)

Products and version ranges known to be affected.

showing 20 of 94
05

advisories (2)

Vendor and ecosystem advisories describing this.

  • SSA-113131SSA-113131: Denial of Service Vulnerabilities in SIMATIC S7-400 CPUs2018-11-13csaf · siemens_psirtDE

    Two vulnerabilities have been identified in the SIMATIC S7-400 CPU family that could allow an attacker to cause a denial of service condition. In order to exploit the vulnerabilities, an attacker must have access to the affected devices on port 102/tcp via Ethernet, PROFIBUS or Multi Point Interfaces (MPI). Siemens has released updates for several affected products and recommends to update to the latest versions. Siemens recommends specific countermeasures for products where updates are not, or not yet available.

  • ICSA-18-317-02Siemens S7-400 CPUs (Update B)2018-11-13icsa · cisa_csaf_otUS

    Two vulnerabilities have been identified in the SIMATIC S7-400 CPU family that could allow an attacker to cause a denial of service condition. In order to exploit the vulnerabilities, an attacker must have access to the affected devices on port 102/tcp via Ethernet, PROFIBUS or Multi Point Interfaces (MPI). Siemens has released updates for several affected products and recommends to update to the latest versions. Siemens recommends specific countermeasures for products where updates are not, or not yet available.

06

also known as (4)

Other names and identifiers for this entity.

07

sources

Which sources assert this record, and when.

cnnvdenisa_euvdfstec_bducisa_csaf_otsiemens_psirtNVDCVE.orgMITRE
published 2018-12-13modified 2026-06-17
08

references (4)

External citations — patches, advisories, analysis.

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