How severe is CVE-2022-47374?

CVE-2022-47374 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2022-47374 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-47374?

CVE-2022-47374 primarily affects Siemens 6es7412-2ek07-0ab0 Firmware. In total, 25 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2022-47374?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2022-47374 published?

CVE-2022-47374 was published on 2023-12-12 and last updated on 2026-06-17.

CVE-2022-47374

CVE-2022-47374 is a high-severity vulnerability in Siemens 6es7412-2ek07-0ab0 Firmware with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-674.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 1% (49th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-674
Affected product: Siemens 6es7412-2ek07-0ab0 Firmware
Published: 2023-12-12
Last modified: 2026-06-17

Description

A vulnerability has been identified in SIMATIC PC-Station Plus (All versions), SIMATIC S7-400 CPU 412-2 PN V7 (All versions), SIMATIC S7-400 CPU 414-3 PN/DP V7 (All versions), SIMATIC S7-400 CPU 414F-3 PN/DP V7 (All versions), SIMATIC S7-400 CPU 416-3 PN/DP V7 (All versions), SIMATIC S7-400 CPU 416F-3 PN/DP V7 (All versions), SINAMICS S120 (incl. SIPLUS variants) (All versions < V5.2 SP3 HF15), SIPLUS S7-400 CPU 414-3 PN/DP V7 (All versions), SIPLUS S7-400 CPU 416-3 PN/DP V7 (All versions). The affected products do not handle HTTP(S) requests to the web server correctly. This could allow an attacker to exhaust system resources and create a denial of service condition for the device.

Frequently asked questions

What is CVE-2022-47374?: A vulnerability has been identified in SIMATIC PC-Station Plus (All versions), SIMATIC S7-400 CPU 412-2 PN V7 (All versions), SIMATIC S7-400 CPU 414-3 PN/DP V7 (All versions), SIMATIC S7-400 CPU 414F-3 PN/DP V7 (All versions), SIMATIC S7-400 CPU 416-3 PN/DP V7 (All versions), SIMATIC S7-400 CPU 416F-3 PN/DP V7 (All versions), SINAMICS S120 (incl. SIPLUS variants) (All versions < V5.2 SP3 HF15), SIPLUS S7-400 CPU 414-3 PN/DP V7 (All versions), SIPLUS S7-400 CPU 416-3 PN/DP V7 (All versions). The affected products do not handle HTTP(S) requests to the web server correctly. This could allow an attacker to exhaust system resources and create a denial of service condition for the device.
How severe is CVE-2022-47374?: CVE-2022-47374 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2022-47374 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-47374?: CVE-2022-47374 primarily affects Siemens 6es7412-2ek07-0ab0 Firmware. In total, 25 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2022-47374?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2022-47374 published?: CVE-2022-47374 was published on 2023-12-12 and last updated on 2026-06-17.

References

https://cert-portal.siemens.com/productcert/pdf/ssa-892915.pdf

Affected products (25)

cpe:2.3:o:siemens:6es7412-2ek07-0ab0_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:6es7414-3em07-0ab0_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:6es7414-3fm07-0ab0_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:6es7416-3es07-0ab0_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:6es7416-3fs07-0ab0_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:6ag1414-3em07-7ab0_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:6ag1416-3es07-7ab0_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:sinamics_s120_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:siemens:sinamics_s120_firmware:4.7:*:*:*:*:*:*:*
cpe:2.3:o:siemens:sinamics_s120_firmware:4.8:*:*:*:*:*:*:*
cpe:2.3:o:siemens:sinamics_s120_firmware:4.9:*:*:*:*:*:*:*
cpe:2.3:o:siemens:sinamics_s120_firmware:5.0:*:*:*:*:*:*:*
cpe:2.3:o:siemens:sinamics_s120_firmware:5.1:sp1:*:*:*:*:*:*
cpe:2.3:o:siemens:sinamics_s120_firmware:5.1:sp1_hotfix1:*:*:*:*:*:*
cpe:2.3:o:siemens:sinamics_s120_firmware:5.1:sp1_hotfix13:*:*:*:*:*:*
cpe:2.3:o:siemens:sinamics_s120_firmware:5.2:-:*:*:*:*:*:*
cpe:2.3:o:siemens:sinamics_s120_firmware:5.2:hotfix1:*:*:*:*:*:*
cpe:2.3:o:siemens:sinamics_s120_firmware:5.2:hotfix11:*:*:*:*:*:*
cpe:2.3:o:siemens:sinamics_s120_firmware:5.2:hotfix7:*:*:*:*:*:*
cpe:2.3:o:siemens:sinamics_s120_firmware:5.2:sp3:*:*:*:*:*:*
cpe:2.3:o:siemens:sinamics_s120_firmware:5.2:sp3_hotfix1:*:*:*:*:*:*
cpe:2.3:o:siemens:sinamics_s120_firmware:5.2:sp3_hotfix13:*:*:*:*:*:*
cpe:2.3:o:siemens:sinamics_s120_firmware:5.2:sp3_hotfix6:*:*:*:*:*:*
cpe:2.3:o:siemens:sinamics_s120_firmware:5.2:sp3_hotfix9:*:*:*:*:*:*
cpe:2.3:o:siemens:simatic_pc-station_plus_firmware:*:*:*:*:*:*:*:*

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