No exploitation reportedFix available

CVE-2023-0457

No exploitation reported by the sources we read.

Published2023-03-03
WeaknessCWE-256 · CWE-522

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

Plaintext Storage of a Password vulnerability in Mitsubishi Electric Corporation MELSEC iQ-F Series, MELSEC iQ-R Series, MELSEC-Q Series and MELSEC-L Series allows a remote unauthenticated attacker to disclose plaintext credentials stored in project files and login into FTP server or Web server.

Timeline

dates in UTC

2023-03-0305:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 21:37 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-2023-0457?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2023-0457?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Mitsubishielectric fx5-enet firmwareversion to verify

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

Mitsubishielectric fx5-enet\/ip firmwareversion to verify

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

Mitsubishielectric fx5s-30mr\/es firmwareversion to verify

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

35 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-23-061-01 CISA5 known affected
Mitsubishi Electric MELSEC iQ-F Series
All models of FX5U(C) CPU modules: * · All models of FX5UJ CPU modules: * · All models FX5S CPU modules: * · +2 more

Full record on NVD

Fix

Vendor fix CISA ICSA-23-061-01 · 5 productsMitsubishi Electric recommends users take the following mitigation measures to minimize the risk of a malicious actor exploiting this vulnerability:
Vendor fix CISA ICSA-23-061-01 · 5 productsEncrypt the communication data or project files when sending and receiving or sharing these files.
Vendor fix CISA ICSA-23-061-01 · 5 productsUse a firewall or virtual private network (VPN), etc. to prevent unauthorized access when internet access is required.
Vendor fix CISA ICSA-23-061-01 · 5 productsUse product(s) within a local area network (LAN) and block access from untrusted networks and hosts using firewalls.
Vendor fix CISA ICSA-23-061-01 · 5 productsUse the IP filter function to block access from untrusted hosts.
Vendor fix CISA ICSA-23-061-01 · 5 productsFor details regarding the IP filter function, users can refer to "12.1 IP Filter Function" in the MELSEC iQ-F FX5 User's Manual (Ethernet Communication).

Advisories and patches

www.cisa.govMitigation
www.mitsubishielectric.comVendor Advisory

Detection

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

Sources

CISA-ADPSSVC decisionnone2025-03-05
OpenCVESSVC decisionnone—
CNACVSS 3.17.5read 2026-10-23
NVDCVSS 3.17.5read 2026-10-23
CNAweakness (CWE)CWE-256read 2026-10-23
NVDweakness (CWE)CWE-522read 2026-10-23
FIRST EPSSEPSS score1.2 %2026-10-23

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Published: 2023-03-03
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2023-0457?

Is CVE-2023-0457 actively exploited?

Active exploitation of CVE-2023-0457 has not been confirmed. Its EPSS score was 1.2% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2023-0457?

CVE-2023-0457 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:H/I:N/A:N.

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