CVE-2023-2063: Unrestricted Upload of File with Dangerous Type vulnerability in FTP function on Mitsubishi Electric Corporati

Routine

MEDIUM 6.3MITIGATEMITIGATEMITIGATE

CVE-2023-2063 is a medium-severity flaw (CVSS 6.3) affecting fx5-enet\/ip firmware, sw1dnn-eipct-bd firmware, rj71eip91 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Unrestricted Upload of File with Dangerous Type vulnerability in FTP function on Mitsubishi Electric Corporation MELSEC iQ-R Series EtherNet/IP module RJ71EIP91 and MELSEC iQ-F Series EtherNet/IP module FX5-ENET/IP allows a remote unauthenticated attacker to cause information disclosure, tampering, deletion or destruction via file upload/download. As a result, the attacker may be able to exploit this for further attacks.

Why this priority

No elevated risk signals yet

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

Risk facts

CVSS score	6.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.6% (top 51%)
CISA exploited list	No
Weakness	CWE-434
Published	2023-06-02
Last modified	2026-06-17

Publisher (CNA): Mitsubishi Electric Corporation · Vendor: mitsubishielectric

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2023-06-02 05:15 UTCPublished CVE record published
2026-06-17 05:51 UTCUpdated Record last modified

mitsubishielectric fx5-enet\/ip firmware MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

mitsubishielectric sw1dnn-eipct-bd firmware MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

mitsubishielectric rj71eip91 firmware MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

mitsubishielectric sw1dnn-eipctfx5-bd firmware MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

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-2023-2063?

fx5-enet\/ip firmware: mitigate or apply the listed mitigation; sw1dnn-eipct-bd firmware: mitigate or apply the listed mitigation; rj71eip91 firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2023-2063 being exploited?

CVE-2023-2063 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-2023-2063 affect?

CVE-2023-2063 affects fx5-enet\/ip firmware, sw1dnn-eipct-bd firmware, rj71eip91 firmware. Severity is medium (CVSS 6.3). Unrestricted Upload of File with Dangerous Type vulnerability in FTP function on Mitsubishi Electric Corporation MELSEC iQ-R Series EtherNet/IP module RJ71EIP91 and MELSEC iQ-F Series EtherNet/IP module FX5-ENET/IP allows a remote unauthent

How urgent is CVE-2023-2063?

Priority 34/100. No elevated risk signals yet.

Software pages

Mitsubishi Electric vulnerabilities

Related CVEs

CVE-2023-2062 MEDIUM 6.2 MITIGATE MITIGATE Missing Password Field Masking vulnerability in Mitsubishi Electric Corporation EtherNet/IP configuration tool
CVE-2023-2061 MEDIUM 6.2 MITIGATE MITIGATE Use of Hard-coded Password vulnerability in FTP function on Mitsubishi Electric Corporation MELSEC iQ-R Series
CVE-2023-2060 HIGH 7.5 MITIGATE MITIGATE Weak Password Requirements vulnerability in FTP function on Mitsubishi Electric Corporation MELSEC iQ-R Series

References

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