No exploitation reported

CVE-2020-12009

No exploitation reported by the sources we read.

Published2020-07-16
WeaknessCWE-502

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 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.

Timeline

dates in UTC

2020-07-1620:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 18:48 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-2020-12009?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2020-12009?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Iconics bizviz

Branch	Affected	Fixed in	Source
—	all versions	no fix published	NVD

Iconics energy analytix

Branch	Affected	Fixed in	Source
—	all versions	no fix published	NVD

Iconics facility analytix

Branch	Affected	Fixed in	Source
—	all versions	no fix published	NVD

8 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-20-170-02 CISA2 known affected
Mitsubishi Electric MC Works64, MC Works32
MC Works32: Version 3.00A (9.50.255.02) · MC Works64: Version 4.02C (10.95.208.31) and earlier all versions
ICSA-20-170-03 CISA6 known affected
ICONICS GENESIS64, GENESIS32
GENESIS32: v9.5 and prior · Hyper Historian: v10.96 and prior · GENESIS64: v10.96 and prior · +3 more

Full record on NVD

Fix

Mitigation from the vendor CISA ICSA-20-170-02 · 2 productsMitsubishi Electric recommends updating to the latest software version or applying security patches.
Mitigation from the vendor CISA ICSA-20-170-02 · 2 productsUsers can get the installer of the latest software version or security patches in one of the following ways: Download the latest software versions from the MC Works Vulnerability Information website.
Mitigation from the vendor CISA ICSA-20-170-02 · 2 productsUsers can get the installer of the latest software version or security patches in one of the following ways: Contact a Mitsubishi Electric representative.
Mitigation from the vendor CISA ICSA-20-170-02 · 2 productsFor more information about these vulnerabilities and related workarounds, see the MC Works Vulnerability Information website.
Mitigation from the vendor CISA ICSA-20-170-03 · 6 productsICONICS is releasing a patch for v10.96, v10.95.5, and v10.95.2 of GENESIS64.
Mitigation from the vendor CISA ICSA-20-170-03 · 6 productsICONICS is releasing a patch for v9.4 and v9.5 of GENESIS32.

Detection

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

Sources

NVDCVSS 3.17.5read 2026-10-23
NVDCVSS 2.05read 2026-10-23
CNAweakness (CWE)CWE-502read 2026-10-23
NVDweakness (CWE)CWE-502read 2026-10-23
FIRST EPSSEPSS score3.6 %2026-10-22

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published: 2020-07-16
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2020-12009?

Is CVE-2020-12009 actively exploited?

Active exploitation of CVE-2020-12009 has not been confirmed. Its EPSS score was 3.6% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2020-12009?

CVE-2020-12009 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

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