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Fencer Vulns
high 7.5

CVE-2022-43768 json

A vulnerability has been identified in SIMATIC CP 1242-7 V2 (6GK7242-7KX31-0XE0) (All versions < V3.4.29), SIMATIC CP 1243-1 (6GK7243-1BX30…

published 2023-04-11 3 y ago modified 2026-10-23 16 d ago also EUVD-2022-46738

cvss
7.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.0%
EPSS 1.0% chance of exploitation in 30 days, percentile 61%
public exploits
0
none known

Summary

A vulnerability has been identified in SIMATIC CP 1242-7 V2 (6GK7242-7KX31-0XE0) (All versions < V3.4.29), SIMATIC CP 1243-1 (6GK7243-1BX30-0XE0) (All versions < V3.4.29), SIMATIC CP 1243-1 DNP3 (incl. SIPLUS variants) (All versions < V3.4.29), SIMATIC CP 1243-1 IEC (incl. SIPLUS variants) (All versions < V3.4.29), SIMATIC CP 1243-7 LTE EU (6GK7243-7KX30-0XE0) (All versions < V3.4.29), SIMATIC CP 1243-7 LTE US (6GK7243-7SX30-0XE0) (All versions < V3.4.29), SIMATIC CP 1243-8 IRC (6GK7243-8RX30-0XE0) (All versions < V3.4.29), 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), SIMATIC CP 443-1 (6GK7443-1EX30-0XE0) (All versions < V3.3), SIMATIC CP 443-1 (6GK7443-1EX30-0XE1) (All versions < V3.3), SIMATIC CP 443-1 Advanced (6GK7443-1GX30-0XE0) (All versions < V3.3), 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 NET CP 1242-7 V2 (6AG1242-7KX31-7XE0) (All versions < V3.4.29), SIPLUS NET CP 443-1 (6AG1443-1EX30-4XE0) (All versions < V3.3), SIPLUS NET CP 443-1 Advanced (6AG1443-1GX30-4XE0) (All versions < V3.3), SIPLUS S7-1200 CP 1243-1 (6AG1243-1BX30-2AX0) (All versions < V3.4.29), SIPLUS S7-1200 CP 1243-1 RAIL (6AG2243-1BX30-1XE0) (All versions < V3.4.29), SIPLUS TIM 1531 IRC (6AG1543-1MX00-7XE0) (All versions < V2.3.6), TIM 1531 IRC (6GK7543-1MX00-0XE0) (All versions < V2.3.6). The webserver of the affected products contains a vulnerability that may lead to a denial of service condition. An attacker may cause a denial of service situation of the webserver of the affected product.

Patch / fix

  • Siemens SIMATIC CP 1242-7 V2 V3.4.29
  • Siemens SIMATIC CP 1243-1 V3.4.29
  • Siemens SIMATIC CP 1243-1 DNP3 (incl. SIPLUS variants) V3.4.29
  • Siemens SIMATIC CP 1243-1 IEC (incl. SIPLUS variants) V3.4.29
  • Siemens SIMATIC CP 1243-7 LTE EU V3.4.29
  • Siemens SIMATIC CP 1243-7 LTE US V3.4.29
  • Siemens SIMATIC CP 1243-8 IRC V3.4.29
  • Siemens SIMATIC CP 1542SP-1 V2.3
  • Siemens SIMATIC CP 1542SP-1 IRC V2.3
  • Siemens SIMATIC CP 1543SP-1 V2.3
  • Siemens SIMATIC CP 443-1 V3.3
  • Siemens SIMATIC CP 443-1 Advanced V3.3
  • 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 NET CP 1242-7 V2 V3.4.29
  • Siemens SIPLUS NET CP 443-1 V3.3
  • Siemens SIPLUS NET CP 443-1 Advanced V3.3
  • Siemens SIPLUS S7-1200 CP 1243-1 V3.4.29
  • Siemens SIPLUS S7-1200 CP 1243-1 RAIL V3.4.29
  • Siemens SIPLUS TIM 1531 IRC V2.3.6
  • Siemens TIM 1531 IRC V2.3.6

Vendor advisories

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

cisa ICSA-23-103-10 updated cvss 7.5

Siemens Industrial Products

  • Siemens SIMATIC CP 443-1 (6GK7443-1EX30-0XE0) <V3.3 Siemens SIMATIC CP 443-1 (6GK7443-1EX30-0XE1) <V3.3 Siemens SIMATIC CP 443-1 Advanced (6GK7443-1GX30-0XE0) <V3.3
    affected: fixed in V3.3, workaround, mitigation support.industry.siemens.com
  • Siemens SIMATIC CP 1242-7 V2 (6GK7242-7KX31-0XE0) <V3.4.29 Siemens SIMATIC CP 1243-1 (6GK7243-1BX30-0XE0) <V3.4.29 Siemens SIMATIC CP 1243-1 DNP3 (incl. SIPLUS variants) <V3.4.29 Siemens SIMATIC CP 1243-1 IEC (incl. SIPLUS variants) <V3.4.29 Siemens SIMATIC CP 1243-7 LTE EU (6GK7243-7KX30-0XE0) <V3.4.29 Siemens SIMATIC CP 1243-7 LTE US (6GK7243-7SX30-0XE0) <V3.4.29
    +1 more products
    Siemens SIMATIC CP 1243-8 IRC (6GK7243-8RX30-0XE0) <V3.4.29
    affected: fixed in V3.4.29, workaround, mitigation support.industry.siemens.com
  • 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, workaround, mitigation support.industry.siemens.com
  • Siemens SIPLUS NET CP 443-1 (6AG1443-1EX30-4XE0) <V3.3 Siemens SIPLUS NET CP 443-1 Advanced (6AG1443-1GX30-4XE0) <V3.3
    affected: fixed in V3.3, workaround, mitigation support.industry.siemens.com
  • Siemens SIPLUS NET CP 1242-7 V2 (6AG1242-7KX31-7XE0) <V3.4.29 Siemens SIPLUS S7-1200 CP 1243-1 (6AG1243-1BX30-2AX0) <V3.4.29 Siemens SIPLUS S7-1200 CP 1243-1 RAIL (6AG2243-1BX30-1XE0) <V3.4.29
    affected: fixed in V3.4.29, workaround, mitigation support.industry.siemens.com
  • Siemens SIPLUS TIM 1531 IRC (6AG1543-1MX00-7XE0) <V2.3.6 Siemens TIM 1531 IRC (6GK7543-1MX00-0XE0) <V2.3.6
    affected: fixed in V2.3.6, workaround, 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
21 mo ago

Exploit prediction

0.95% chance of exploitation in the next 30 days, higher than 61% 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:N/I:N/A:H/E:P/RL:O/RC:C
CNA 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

  • Siemens SIMATIC CP 1242-7 V2
  • Siemens SIMATIC CP 1243-1
  • Siemens SIMATIC CP 1243-1 DNP3 (incl. SIPLUS variants)
  • Siemens SIMATIC CP 1243-1 IEC (incl. SIPLUS variants)
  • Siemens SIMATIC CP 1243-7 LTE EU
  • Siemens SIMATIC CP 1243-7 LTE US
  • Siemens SIMATIC CP 1243-8 IRC
  • Siemens SIMATIC CP 1542SP-1
  • Siemens SIMATIC CP 1542SP-1 IRC
  • Siemens SIMATIC CP 1543SP-1
  • Siemens SIMATIC CP 443-1
  • Siemens SIMATIC CP 443-1 Advanced
  • 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 NET CP 1242-7 V2
  • Siemens SIPLUS NET CP 443-1
  • Siemens SIPLUS NET CP 443-1 Advanced
  • Siemens SIPLUS S7-1200 CP 1243-1
  • Siemens SIPLUS S7-1200 CP 1243-1 RAIL
  • Siemens SIPLUS TIM 1531 IRC
  • Siemens TIM 1531 IRC

Classification

Weakness
  • CWE-770 Allocation of Resources Without Limits or Throttling

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.