How severe is CVE-2022-22724?

CVE-2022-22724 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-2022-22724 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (56th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-22724?

CVE-2022-22724 primarily affects Schneider-electric Modicon M340 Bmxp341000 Firmware. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2022-22724?

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-2022-22724 published?

CVE-2022-22724 was published on 2022-02-04 and last updated on 2026-06-17.

CVE-2022-22724

CVE-2022-22724 is a high-severity vulnerability in Schneider-electric Modicon M340 Bmxp341000 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-400.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 1% (56th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-400
Affected product: Schneider-electric Modicon M340 Bmxp341000 Firmware
Published: 2022-02-04
Last modified: 2026-06-17

Description

A CWE-400: Uncontrolled Resource Consumption vulnerability exists that could cause a denial of service on ports 80 (HTTP) and 502 (Modbus), when sending a large number of TCP RST or FIN packets to any open TCP port of the PLC. Affected Product: Modicon M340 CPUs: BMXP34 (All Versions)

Frequently asked questions

What is CVE-2022-22724?: A CWE-400: Uncontrolled Resource Consumption vulnerability exists that could cause a denial of service on ports 80 (HTTP) and 502 (Modbus), when sending a large number of TCP RST or FIN packets to any open TCP port of the PLC. Affected Product: Modicon M340 CPUs: BMXP34 (All Versions)
How severe is CVE-2022-22724?: CVE-2022-22724 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-2022-22724 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (56th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-22724?: CVE-2022-22724 primarily affects Schneider-electric Modicon M340 Bmxp341000 Firmware. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2022-22724?: 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-2022-22724 published?: CVE-2022-22724 was published on 2022-02-04 and last updated on 2026-06-17.

References

https://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2022-011-01

Affected products (6)

cpe:2.3:o:schneider-electric:modicon_m340_bmxp341000_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:schneider-electric:modicon_m340_bmxp342000_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:schneider-electric:modicon_m340_bmxp342010_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:schneider-electric:modicon_m340_bmxp3420102_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:schneider-electric:modicon_m340_bmxp342030_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:schneider-electric:modicon_m340_bmxp3420302_firmware:-:*:*:*:*:*:*:*

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