CVE-2022-34820

What it is

A vulnerability has been identified in SIMATIC CP 1242-7 V2 (All versions < V3.3.46), SIMATIC CP 1243-1 (All versions < V3.3.46), SIMATIC CP 1243-7 LTE EU (All versions < V3.3.46), SIMATIC CP 1243-7 LTE US (All versions < V3.3.46), SIMATIC CP 1243-8 IRC (All versions < V3.3.46), SIMATIC CP 1542SP-1 IRC (All versions >= V2.0 < V2.2.28), SIMATIC CP 1543-1 (All versions < V3.0.22), SIMATIC CP 1543SP-1 (All versions >= V2.0 < V2.2.28), SIPLUS ET 200SP CP 1542SP-1 IRC TX RAIL (All versions >= V2.0 < V2.2.28), SIPLUS ET 200SP CP 1543SP-1 ISEC (All versions >= V2.0 < V2.2.28), SIPLUS ET 200SP CP 1543SP-1 ISEC TX RAIL (All versions >= V2.0 < V2.2.28), SIPLUS NET CP 1242-7 V2 (All versions < V3.3.46), SIPLUS NET CP 1543-1 (All versions < V3.0.22), SIPLUS S7-1200 CP 1243-1 (All versions < V3.3.46), SIPLUS S7-1200 CP 1243-1 RAIL (All versions < V3.3.46). The application does not correctly escape some user provided fields during the authentication process. This could allow an attacker to inject custom commands and execute arbitrary code with elevated privileges.

At a glance

Exploitability

Can be exploited from the same network segment with an admin-level account. High risk of data exposure, data tampering, service disruption.

Exploit odds

2.2% chance of exploitation in the next 30 days (EPSS).

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2022-07-12 10:15 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-17 04:50 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 2.2% in the next 30 days (EPSS).
• Severity: 8.4 HIGH (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2022-07-12 10:15 UTC

Last modified

2026-06-17 04:50 UTC

Exploit probability

2.2% · EPSS, next 30 days

Weakness

CWE-77 · Command injection

Record status

Modified

Affected

• Siemens Simatic Cp 1242-7 v2 Firmware < 3.3.46
• Siemens Simatic Cp 1243-1 Firmware < 3.3.46
• Siemens Simatic Cp 1243-7 Lte Eu Firmware < 3.3.46
• Siemens Simatic Cp 1243-7 Lte Us Firmware < 3.3.46
• Siemens Simatic Cp 1243-8 Irc Firmware < 3.3.46
• Siemens Simatic Cp 1542sp-1 Irc Firmware < 2.2.28
• Siemens Simatic Cp 1543-1 Firmware < 3.0.22
• Siemens Simatic Cp 1543sp-1 Firmware < 2.2.28

Attack profile CVSS 3.1 · 8.4

Attack vector

Adjacent network

Complexity

Low

Privileges needed

High

User interaction

None

Scope

Changed

Confidentiality

High

Integrity

High

Availability

High

Is it in your code?

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Read https://cve-list.com/agent/cve/CVE-2022-34820.md and follow it. Check whether this project is affected by CVE-2022-34820. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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