How severe is CVE-2020-12009?

CVE-2020-12009 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-2020-12009 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (88th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-12009?

CVE-2020-12009 primarily affects Mitsubishielectric Mc Works. In total, 11 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-12009?

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-2020-12009 published?

CVE-2020-12009 was published on 2020-07-16 and last updated on 2026-06-17.

CVE-2020-12009

CVE-2020-12009 is a high-severity vulnerability in Mitsubishielectric Mc Works 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-502.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 4% (88th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-502
Affected product: Mitsubishielectric Mc Works
Published: 2020-07-16
Last modified: 2026-06-17

Description

A specially crafted communication packet sent to the affected device could cause a denial-of-service condition due to a deserialization vulnerability. This affects: Mitsubishi Electric MC Works64 Version 4.02C (10.95.208.31) and earlier, all versions; Mitsubishi Electric MC Works32 Version 3.00A (9.50.255.02); ICONICS GenBroker64, Platform Services, Workbench, FrameWorX Server v10.96 and prior; ICONICS GenBroker32 v9.5 and prior.

Frequently asked questions

What is CVE-2020-12009?: A specially crafted communication packet sent to the affected device could cause a denial-of-service condition due to a deserialization vulnerability. This affects: Mitsubishi Electric MC Works64 Version 4.02C (10.95.208.31) and earlier, all versions; Mitsubishi Electric MC Works32 Version 3.00A (9.50.255.02); ICONICS GenBroker64, Platform Services, Workbench, FrameWorX Server v10.96 and prior; ICONICS GenBroker32 v9.5 and prior.
How severe is CVE-2020-12009?: CVE-2020-12009 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-2020-12009 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (88th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-12009?: CVE-2020-12009 primarily affects Mitsubishielectric Mc Works. In total, 11 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-12009?: 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-2020-12009 published?: CVE-2020-12009 was published on 2020-07-16 and last updated on 2026-06-17.

References

Affected products (11)

cpe:2.3:a:mitsubishielectric:mc_works:*:*:*:*:*:*:*:*
cpe:2.3:a:mitsubishielectric:mc_works32:9.50.255.02:*:*:*:*:*:*:*
cpe:2.3:a:iconics:energy_analytix:-:*:*:*:*:*:*:*
cpe:2.3:a:iconics:facility_analytix:-:*:*:*:*:*:*:*
cpe:2.3:a:iconics:genesis64:-:*:*:*:*:*:*:*
cpe:2.3:a:iconics:hyper_historian:-:*:*:*:*:*:*:*
cpe:2.3:a:iconics:mobilehmi:-:*:*:*:*:*:*:*
cpe:2.3:a:iconics:quality_analytix:-:*:*:*:*:*:*:*
cpe:2.3:a:iconics:smart_energy_analytix:-:*:*:*:*:*:*:*
cpe:2.3:a:iconics:bizviz:-:*:*:*:*:*:*:*
cpe:2.3:a:iconics:genesis32:-:*:*:*:*:*:*:*

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