How severe is CVE-2023-38380?

CVE-2023-38380 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-2023-38380 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (57th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-38380?

CVE-2023-38380 primarily affects Siemens 6gk7243-8rx30-0xe0 Firmware. In total, 23 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-38380?

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-2023-38380 published?

CVE-2023-38380 was published on 2023-12-12 and last updated on 2026-06-17.

CVE-2023-38380

CVE-2023-38380 is a high-severity vulnerability in Siemens 6gk7243-8rx30-0xe0 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-401.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v4: 8.7
EPSS exploit prediction: 1% (57th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-401
Affected product: Siemens 6gk7243-8rx30-0xe0 Firmware
Published: 2023-12-12
Last modified: 2026-06-17

Description

A vulnerability has been identified in SIMATIC CP 1242-7 V2 (incl. SIPLUS variants) (All versions < V3.4.29), SIMATIC CP 1243-1 (incl. SIPLUS variants) (All versions < V3.4.29), SIMATIC CP 1243-1 DNP3 (incl. SIPLUS variants) (All versions), SIMATIC CP 1243-1 IEC (incl. SIPLUS variants) (All versions < V3.4.29), SIMATIC CP 1243-7 LTE (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 1543-1 (6GK7543-1AX00-0XE0) (All versions < V3.0.37), SIMATIC CP 1543SP-1 (6GK7543-6WX00-0XE0) (All versions < V2.3), SINAMICS S210 (6SL5...) (All versions >= V6.1 < V6.1 HF2), 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 1543-1 (6AG1543-1AX00-2XE0) (All versions < V3.0.37). The webserver implementation of the affected products does not correctly release allocated memory after it has been used. An attacker with network access could use this vulnerability to cause a denial-of-service condition in the webserver of the affected product.

Frequently asked questions

What is CVE-2023-38380?: A vulnerability has been identified in SIMATIC CP 1242-7 V2 (incl. SIPLUS variants) (All versions < V3.4.29), SIMATIC CP 1243-1 (incl. SIPLUS variants) (All versions < V3.4.29), SIMATIC CP 1243-1 DNP3 (incl. SIPLUS variants) (All versions), SIMATIC CP 1243-1 IEC (incl. SIPLUS variants) (All versions < V3.4.29), SIMATIC CP 1243-7 LTE (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 1543-1 (6GK7543-1AX00-0XE0) (All versions < V3.0.37), SIMATIC CP 1543SP-1 (6GK7543-6WX00-0XE0) (All versions < V2.3), SINAMICS S210 (6SL5...) (All versions >= V6.1 < V6.1 HF2), 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 1543-1 (6AG1543-1AX00-2XE0) (All versions < V3.0.37). The webserver implementation of the affected products does not correctly release allocated memory after it has been used. An attacker with network access could use this vulnerability to cause a denial-of-service condition in the webserver of the affected product.
How severe is CVE-2023-38380?: CVE-2023-38380 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-2023-38380 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (57th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-38380?: CVE-2023-38380 primarily affects Siemens 6gk7243-8rx30-0xe0 Firmware. In total, 23 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-38380?: 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-2023-38380 published?: CVE-2023-38380 was published on 2023-12-12 and last updated on 2026-06-17.

References

Affected products (23)

cpe:2.3:o:siemens:6gk7243-8rx30-0xe0_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:siemens:6gk7543-1ax00-0xe0_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:siemens:6ag1543-1ax00-2xe0_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:siemens:simatic_cp_1242-7_v2_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:siemens:simatic_cp_1243-1_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:siemens:simatic_cp_1243-1_dnp3_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:siemens:simatic_cp_1243-1_iec_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:siemens:simatic_cp_1243-7_lte_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:siemens:sinamics_s210_firmware:5.1:-:*:*:*:*:*:*
cpe:2.3:o:siemens:sinamics_s210_firmware:5.1:sp1:*:*:*:*:*:*
cpe:2.3:o:siemens:sinamics_s210_firmware:5.1:sp1_hotfix8:*:*:*:*:*:*
cpe:2.3:o:siemens:sinamics_s210_firmware:5.2:-:*:*:*:*:*:*
cpe:2.3:o:siemens:sinamics_s210_firmware:5.2:hotfix2:*:*:*:*:*:*
cpe:2.3:o:siemens:sinamics_s210_firmware:5.2:hotfix5:*:*:*:*:*:*
cpe:2.3:o:siemens:sinamics_s210_firmware:5.2:hotfix6:*:*:*:*:*:*
cpe:2.3:o:siemens:sinamics_s210_firmware:5.2:hotfix7:*:*:*:*:*:*
cpe:2.3:o:siemens:sinamics_s210_firmware:5.2:sp3:*:*:*:*:*:*
cpe:2.3:o:siemens:sinamics_s210_firmware:5.2:sp3_hotfix3:*:*:*:*:*:*
cpe:2.3:o:siemens:sinamics_s210_firmware:5.2:sp3_hotfix5:*:*:*:*:*:*
cpe:2.3:o:siemens:sinamics_s210_firmware:5.2:sp3_hotfix6:*:*:*:*:*:*
cpe:2.3:o:siemens:sinamics_s210_firmware:5.2:sp3_hotfix9:*:*:*:*:*:*
cpe:2.3:o:siemens:sinamics_s210_firmware:6.1:-:*:*:*:*:*:*
cpe:2.3:o:siemens:sinamics_s210_firmware:6.1:hotfix1:*:*:*:*:*:*

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