A vulnerability has been identified in SIMATIC CP 1543-1 V4.0 (6GK7543-1AX10-0XE0) (All versions >= V4.0.44 < V4.0.50).

published 2024-11-12 23 mo ago modified 2026-06-17 4 mo ago also EUVD-2024-44808

cvss: 7.5; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.5%; EPSS 0.5% chance of exploitation in 30 days, percentile 41%
public exploits: 0; none known

A vulnerability has been identified in SIMATIC CP 1543-1 V4.0 (6GK7543-1AX10-0XE0) (All versions >= V4.0.44 < V4.0.50). Affected devices do not properly handle authorization. This could allow an unauthenticated remote attacker to gain access to the filesystem.

Patch / fix

fixed in 2 links 1

Siemens SIMATIC CP 1543-1 V4.0 V4.0.50
siemens simatic_cp_1543-1 V4.0.50

cert-portal.siemens.com/productcert/html/ssa-654798.html advisory

Vendor advisories

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

cisa ICSA-24-319-11 updated 2025-05-06 cvss 7.5

Siemens SIMATIC CP

Siemens SIMATIC CP 1543-1 V4.0 (6GK7543-1AX10-0XE0) >=V4.0.44, <V4.0.50
affected: fixed in V4.0.50, mitigation support.industry.siemens.com

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: yes
Technical impact: partial
Assessed: 23 mo ago (2024-11-12)

Exploit prediction

0.48% chance of exploitation in the next 30 days, higher than 41% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C
CNA	4.0	8.7	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
CNA	4.0	8.7	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CNA	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected products

Siemens SIMATIC CP 1543-1 V4.0
siemens simatic_cp_1543-1

Classification

Weakness

CWE-863 Incorrect Authorization

References

cert-portal.siemens.com /productcert/html/ssa-654798.html
patch, vendor-advisory

Sources

CVE List CVE-2024-50310
NVD CVE-2024-50310

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