CVE-2013-3075: Multiple buffer overflows in ActUWzd.dll 1.0.0.1 in Mitsubishi MX Component 3, as distributed in Citect Citect

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HIGH 10.0DOWNGRADEDOWNGRADEDOWNGRADE

CVE-2013-3075 is a high-severity flaw (CVSS 10.0) affecting mitsubishi mx component, citectfacilities, citectscada. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Multiple buffer overflows in ActUWzd.dll 1.0.0.1 in Mitsubishi MX Component 3, as distributed in Citect CitectFacilities 7.10 and CitectScada 7.10r1, allow remote attackers to execute arbitrary code via a long string, as demonstrated by a long WzTitle property value to a certain ActiveX control.

Why this priority

Critical severity
EPSS top 4%: very likely to be exploited
Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	10.0 (High)
EPSS exploit chance	10.8% (top 4%)
CISA exploited list	No
Weakness	CWE-119
Published	2013-04-19
Last modified	2026-06-16

Publisher (CNA): ICS-CERT · Vendor: mitsubishi-automation · schneider-electric

Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2013-04-19 11:44 UTCPublished CVE record published
2026-06-16 23:54 UTCUpdated Record last modified

mitsubishi-automation mitsubishi mx component DOWNGRADE

Affected: 3

Fixed in: no fixed release known

Safe to downgrade to: a release before 3

1. Check installed version

apt-cache policy mitsubishi-mx-component || rpm -q mitsubishi-mx-component || mitsubishi-mx-component --version

2. No fixed release: DOWNGRADE to a release before 3 (Debian / Ubuntu)

apt-cache madison mitsubishi-mx-component sudo apt install mitsubishi-mx-component=<VERSION_BEFORE_3> sudo apt-mark hold mitsubishi-mx-component

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list mitsubishi-mx-component sudo dnf downgrade mitsubishi-mx-component-<VERSION_BEFORE_3> sudo dnf versionlock add mitsubishi-mx-component

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

schneider-electric citectfacilities DOWNGRADE

Affected: 7.10

Fixed in: no fixed release known

Safe to downgrade to: a release before 7.10

1. Check installed version

apt-cache policy citectfacilities || rpm -q citectfacilities || citectfacilities --version

2. No fixed release: DOWNGRADE to a release before 7.10 (Debian / Ubuntu)

apt-cache madison citectfacilities sudo apt install citectfacilities=<VERSION_BEFORE_7.10> sudo apt-mark hold citectfacilities

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list citectfacilities sudo dnf downgrade citectfacilities-<VERSION_BEFORE_7.10> sudo dnf versionlock add citectfacilities

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

schneider-electric citectscada DOWNGRADE

Affected: 7.10 r1

Fixed in: no fixed release known

Safe to downgrade to: a release before 7.10

1. Check installed version

apt-cache policy citectscada || rpm -q citectscada || citectscada --version

2. No fixed release: DOWNGRADE to a release before 7.10 (Debian / Ubuntu)

apt-cache madison citectscada sudo apt install citectscada=<VERSION_BEFORE_7.10> sudo apt-mark hold citectscada

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list citectscada sudo dnf downgrade citectscada-<VERSION_BEFORE_7.10> sudo dnf versionlock add citectscada

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Exploit-DB: Mitsubishi MX ActiveX Component 3 - 'ActUWzd.dll' 'WzTitle' Remote Heap Spray

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2013-3075?

mitsubishi mx component: downgrade or apply the listed mitigation; citectfacilities: downgrade or apply the listed mitigation; citectscada: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2013-3075 being exploited?

CVE-2013-3075 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2013-3075 affect?

CVE-2013-3075 affects mitsubishi mx component, citectfacilities, citectscada. Severity is high (CVSS 10.0). Multiple buffer overflows in ActUWzd.dll 1.0.0.1 in Mitsubishi MX Component 3, as distributed in Citect CitectFacilities 7.10 and CitectScada 7.10r1, allow remote attackers to execute arbitrary code via a long string, as demonstrated by a l

How urgent is CVE-2013-3075?

Priority 64/100. Critical severity; EPSS top 4%: very likely to be exploited; Public exploit reference

Software pages

Schneider Electric vulnerabilities · Mitsubishi Electric vulnerabilities

References

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