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Fencer Vulns
medium 4.9

CVE-2023-50763 json

A vulnerability has been identified in SIMATIC CP 1542SP-1 (6GK7542-6UX00-0XE0) (All versions < V2.3), SIMATIC CP 1542SP-1 IRC (6GK7542-6VX…

published 2024-06-11 2 y ago modified 2026-06-17 4 mo ago also EUVD-2023-55516

cvss
4.9
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 33%
public exploits
0
none known

Summary

A vulnerability has been identified in SIMATIC CP 1542SP-1 (6GK7542-6UX00-0XE0) (All versions < V2.3), SIMATIC CP 1542SP-1 IRC (6GK7542-6VX00-0XE0) (All versions < V2.3), SIMATIC CP 1543SP-1 (6GK7543-6WX00-0XE0) (All versions < V2.3), SIPLUS ET 200SP CP 1542SP-1 IRC TX RAIL (6AG2542-6VX00-4XE0) (All versions < V2.3), SIPLUS ET 200SP CP 1543SP-1 ISEC (6AG1543-6WX00-7XE0) (All versions < V2.3), SIPLUS ET 200SP CP 1543SP-1 ISEC TX RAIL (6AG2543-6WX00-4XE0) (All versions < V2.3), SIPLUS TIM 1531 IRC (6AG1543-1MX00-7XE0) (All versions < V2.4.8), TIM 1531 IRC (6GK7543-1MX00-0XE0) (All versions < V2.4.8). The web server of affected products, if configured to allow the import of PKCS12 containers, could end up in an infinite loop when processing incomplete certificate chains.

This could allow an authenticated remote attacker to create a denial of service condition by importing specially crafted PKCS12 containers.

Patch / fix

  • Siemens SIMATIC CP 1542SP-1 V2.3
  • Siemens SIMATIC CP 1542SP-1 IRC V2.3
  • Siemens SIMATIC CP 1543SP-1 V2.3
  • Siemens SIPLUS ET 200SP CP 1542SP-1 IRC TX RAIL V2.3
  • Siemens SIPLUS ET 200SP CP 1543SP-1 ISEC V2.3
  • Siemens SIPLUS ET 200SP CP 1543SP-1 ISEC TX RAIL V2.3
  • Siemens SIPLUS TIM 1531 IRC V2.4.8
  • Siemens TIM 1531 IRC V2.4.8

Vendor advisories

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

cisa ICSA-24-165-06 updated cvss 4.9

Siemens TIM 1531 IRC

  • Siemens SIPLUS TIM 1531 IRC (6AG1543-1MX00-7XE0) <V2.4.8 Siemens TIM 1531 IRC (6GK7543-1MX00-0XE0) <V2.4.8
    affected: fixed in V2.4.8 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 ICSA-24-165-10 updated cvss 4.9

Siemens SIMATIC and SIPLUS

  • Siemens SIMATIC CP 1542SP-1 (6GK7542-6UX00-0XE0) <V2.3 Siemens SIMATIC CP 1542SP-1 IRC (6GK7542-6VX00-0XE0) <V2.3 Siemens SIMATIC CP 1543SP-1 (6GK7543-6WX00-0XE0) <V2.3 Siemens SIPLUS ET 200SP CP 1542SP-1 IRC TX RAIL (6AG2542-6VX00-4XE0) <V2.3 Siemens SIPLUS ET 200SP CP 1543SP-1 ISEC (6AG1543-6WX00-7XE0) <V2.3 Siemens SIPLUS ET 200SP CP 1543SP-1 ISEC TX RAIL (6AG2543-6WX00-4XE0) <V2.3
    affected: fixed in V2.3 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
no
Technical impact
partial
Assessed
2 y ago

Exploit prediction

0.39% chance of exploitation in the next 30 days, higher than 33% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 4.9 CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:C
CNA 4.0 6.9 CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
CNA 4.0 6.9 CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/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 4.9 CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

Affected products

  • Siemens SIMATIC CP 1542SP-1
  • Siemens SIMATIC CP 1542SP-1 IRC
  • Siemens SIMATIC CP 1543SP-1
  • Siemens SIPLUS ET 200SP CP 1542SP-1 IRC TX RAIL
  • Siemens SIPLUS ET 200SP CP 1543SP-1 ISEC
  • Siemens SIPLUS ET 200SP CP 1543SP-1 ISEC TX RAIL
  • Siemens SIPLUS TIM 1531 IRC
  • Siemens TIM 1531 IRC

Classification

Weakness
  • CWE-835 Loop with Unreachable Exit Condition

References

Sources

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.