A vulnerability has been identified in SIMATIC CP 1604 (All versions), SIMATIC CP 1616 (All versions), SIMATIC CP 1623 (All versions), SIMA…

published 2023-10-10 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-41114

cvss: 6.7; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.2%; EPSS 0.2% chance of exploitation in 30 days, percentile 9%
public exploits: 0; none known

A vulnerability has been identified in SIMATIC CP 1604 (All versions), SIMATIC CP 1616 (All versions), SIMATIC CP 1623 (All versions), SIMATIC CP 1626 (All versions), SIMATIC CP 1628 (All versions). The kernel memory of affected devices is exposed to user-mode via direct memory access (DMA) which could allow a local attacker with administrative privileges to execute arbitrary code on the host system without any restrictions.

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-23-285-01 updated 2023-10-10 cvss 6.7

Siemens SIMATIC CP products

Siemens SIMATIC CP 1604 (6GK1160-4AA01) Siemens SIMATIC CP 1616 (6GK1161-6AA02) Siemens SIMATIC CP 1623 (6GK1162-3AA00) Siemens SIMATIC CP 1626 (6GK1162-6AA01) Siemens SIMATIC CP 1628 (6GK1162-8AA00)
affected: mitigation, no fix planned

Facts from CISA's republication of the vendor's own advisory (CSAF); the linked advisory is the authoritative source. CISA notification · csaf

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: total
Assessed: 2 y ago (2024-09-19)

Exploit prediction

0.19% chance of exploitation in the next 30 days, higher than 9% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	6.7	CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
CNA	3.1	6.7	CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Affected products

Siemens SIMATIC CP 1604
Siemens SIMATIC CP 1616
Siemens SIMATIC CP 1623
Siemens SIMATIC CP 1626
Siemens SIMATIC CP 1628
siemens simatic_cp_1604_firmware
siemens simatic_cp_1616_firmware
siemens simatic_cp_1623_firmware
siemens simatic_cp_1626_firmware
siemens simatic_cp_1628_firmware

Classification

Weakness

CWE-284 Improper Access Control

References

cert-portal.siemens.com /productcert/pdf/ssa-784849.pdf
vendor-advisory

Sources

CVE List CVE-2023-37194
NVD CVE-2023-37194

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary