No exploitation reportedFix available

CVE-2022-34820

Q: Is CVE-2022-34820 actively exploited?

Active exploitation of CVE-2022-34820 has not been confirmed. Its EPSS score was 2.2% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

Q: What is the CVSS score for CVE-2022-34820?

CVE-2022-34820 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

No exploitation reported by the sources we read.

Published2022-07-12
Fixed in3.3.46
WeaknessCWE-116 · CWE-77

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

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.

Timeline

dates in UTC

2022-07-1210:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 21:37 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2022-34820?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2022-34820?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Siemens simatic cp 1242-7 v2 firmwareversion to verify

Branch	Affected	Fixed in	Source
3.3	< 3.3.46	3.3.46	NVD

Siemens simatic cp 1243-1 firmwareversion to verify

Branch	Affected	Fixed in	Source
3.3	< 3.3.46	3.3.46	NVD

Siemens simatic cp 1243-7 lte eu firmwareversion to verify

Branch	Affected	Fixed in	Source
3.3	< 3.3.46	3.3.46	NVD

12 more products in the sources.

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Vendor advisories

ICSA-22-195-12 CISA15 known affected
Siemens SRCS VPN Feature in SIMATIC CP Devices
SIMATIC CP 1242-7 V2 (6GK7242-7KX31-0XE0) · SIMATIC CP 1243-1 (6GK7243-1BX30-0XE0) · SIMATIC CP 1243-7 LTE EU (6GK7243-7KX30-0XE0) · +12 more

Full record on NVD

Fix

Update Siemens simatic cp 1242-7 v2 firmware to 3.3.46
Vendor fix CISA ICSA-22-195-12 · 5 productsUpdate to V2.2.28 or later version
Vendor fix CISA ICSA-22-195-12 · 8 productsUpdate to V3.3.46 or later version
Vendor fix CISA ICSA-22-195-12 · 2 productsUpdate to V3.0.22 or later version
Workaround from the vendor CISA ICSA-22-195-12 · 15 productsBlock access to port 5243/udp e.g. with an external firewall if possible
Workaround from the vendor CISA ICSA-22-195-12 · 15 productsDisable the SINEMA Remote Connect Server (SRCS) VPN feature
Mitigation from the vendor CISA ICSA-22-195-12 · 15 productsMake sure to configure the CP to only connect to trusted SINEMA Remote Connect Server instances

Advisories and patches

cert-portal.siemens.comPatch · Vendor Advisory

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

CISA-ADPSSVC decisionnone2025-04-18
OpenCVESSVC decisionnone—
CNACVSS 3.18.4read 2026-10-23
NVDCVSS 3.19.8read 2026-10-23
NVDCVSS 2.09.3read 2026-10-23
CNAweakness (CWE)CWE-77read 2026-10-23
NVDweakness (CWE)CWE-116read 2026-10-23
FIRST EPSSEPSS score2.2 %2026-10-23

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published: 2022-07-12
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2022-34820?

Is CVE-2022-34820 actively exploited?

Active exploitation of CVE-2022-34820 has not been confirmed. Its EPSS score was 2.2% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2022-34820?

CVE-2022-34820 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

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