SARA / Free Tools / CVE / CVE-2018-16556

CVE-2018-16556 — A vulnerability has been identified in SIMATIC S7-400 CPU 412-1 DP V7 (All versi

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 <

CVSS

7.5 HIGH

EPSS

0.19% (top 59.50%)

CWE

CWE-20

Published

2018-12-13T16:00:00.000Z

Last modified

2024-08-05T10:24:32.865Z

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:C

01What is this vulnerability?

02Affected products

Vendor	Product	Versions
Siemens	SIMATIC S7	400 CPU 412-1 DP V7 — All versions
Siemens	SIMATIC S7	400 CPU 412-2 DP V7 — All versions
Siemens	SIMATIC S7	400 CPU 414-2 DP V7 — All versions
Siemens	SIMATIC S7	400 CPU 414-3 DP V7 — All versions
Siemens	SIMATIC S7	400 CPU 414-3 PN/DP V7 — All versions < V7.0.3
Siemens	SIMATIC S7	400 CPU 414F-3 PN/DP V7 — All versions < V7.0.3
Siemens	SIMATIC S7	400 CPU 416-2 DP V7 — All versions
Siemens	SIMATIC S7	400 CPU 416-3 DP V7 — All versions
Siemens	SIMATIC S7	400 CPU 416-3 PN/DP V7 — All versions < V7.0.3
Siemens	SIMATIC S7	400 CPU 416F-2 DP V7 — All versions
Siemens	SIMATIC S7	400 CPU 416F-3 PN/DP V7 — All versions < V7.0.3
Siemens	SIMATIC S7	400 CPU 417-4 DP V7 — All versions
Siemens	SIMATIC S7	400 CPU 412-2 PN V7 — All versions < V7.0.3
Siemens	SIMATIC S7	400 H V4.5 and below CPU family (incl. SIPLUS variants) — All versions
Siemens	SIMATIC S7	400 H V6 CPU family (incl. SIPLUS variants) — All versions < V6.0.9
Siemens	SIMATIC S7	400 PN/DP V6 and below CPU family (incl. SIPLUS variants) — All versions
Siemens	SIMATIC S7	410 CPU family (incl. SIPLUS variants) — All versions < V8.2.1
Siemens	SIPLUS S7	400 CPU 414-3 PN/DP V7 — All versions < V7.0.3
Siemens	SIPLUS S7	400 CPU 416-3 PN/DP V7 — All versions < V7.0.3
Siemens	SIPLUS S7	400 CPU 416-3 V7 — All versions
Siemens	SIPLUS S7	400 CPU 417-4 V7 — All versions

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

Patch to a fixed version listed in the vendor advisory (see references below).
Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

Published: 2018-12-13T16:00:00.000Z
Last modified: 2024-08-05T10:24:32.865Z

09References

cert-portal.siemens.com — https://cert-portal.siemens.com/productcert/pdf/ssa-113131.pdf

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