No exploitation reported

CVE-2020-12011

No exploitation reported by the sources we read.

Published2020-07-16
WeaknessCWE-787

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 systems could cause a denial-of-service condition or allow remote code execution. This issue affects: Mitsubishi Electric MC Works64 version 4.02C (10.95.208.31) and earlier, all versions; MC Works32 version 3.00A (9.50.255.02); ICONICS GenBroker64, Platform Services, Workbench, FrameWorX Server version 10.96 and prior; GenBroker32 version 9.5 and prior.

Timeline

dates in UTC

2020-07-1619:15CVE publishedNVD
2026-10-2319:23EPSS crossed 10 %FIRST EPSS

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-2020-12011?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2020-12011?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 3.19.8read 2026-10-23
NVDCVSS 2.07.5read 2026-10-23
CNAweakness (CWE)CWE-787read 2026-10-23
NVDweakness (CWE)CWE-787read 2026-10-23
FIRST EPSSEPSS score29.2 %read 2026-10-23

Technical details

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

Frequently asked questions

What is CVE-2020-12011?

Is CVE-2020-12011 actively exploited?

Active exploitation of CVE-2020-12011 has not been confirmed. Its EPSS score was 29.2% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2020-12011?

CVE-2020-12011 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Hear about the next vulnerability in your software

Surveillance reads the versions in your stack — a domain, a lockfile or a list — checks each CVE against the ranges its sources publish, and alerts you when one you run is exploited or enters CISA KEV. A version it cannot read stays « version not verified ».

Get alerts for this product CISA KEV additions, October 2026 Search CVEs

No credit card required · No monthly cap on website lookups · 250 API requests/month

Go further

Following what attackers exploit right now? The CISA KEV additions of the month, with their patch deadlines.
Running this software? Vulnerability monitoring alerts you to new vulnerabilities in your products.

Related vulnerabilities

Same product first, then the same vendor advisory and the same publication week.

Back to CVE Database