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NVD / CVE Program· CNA Mitsubishi

CVE-2023-7033: Insufficient Resource Pool vulnerability in Ethernet function of Mitsubishi Electric Corporation MELSEC iQ-R series CPU module, MELSEC iQ-L

Noroxi assessment

Priority: Monitor (action score 21/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.84% (FIRST EPSS); higher than 57.7% of all records.
  • Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
  • According to the record, no fixed version is available yet.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Update when a fix is released; follow the vendor's advisory.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

Insufficient Resource Pool vulnerability in Ethernet function of Mitsubishi Electric Corporation MELSEC iQ-R series CPU module, MELSEC iQ-L series CPU module, MELSEC iQ-R Ethernet Interface Module, MELSEC iQ-R CC-Link IE TSN Master/Local Module, CC-Link IE TSN Remote I/O Module, CC-Link IE TSN Analog-Digital Converter Module, CC-Link IE TSN Digital-Analog Converter Module, CC-Link IE TSN - CC-Link IE Field Network Bridge Module, CC-Link IE TSN - AnyWireASLINK Bridge Module, CC-Link IE TSN FPGA Module, CC-Link IE TSN Remote Station Communication LSI CP620 with GbE-PHY, MELSEC iQ-R Motion Module, MELSEC iQ-L Motion Module, MELSEC iQ-F FX5 Motion Module, MELSEC iQ-F Series CPU module, MELSEC iQ-F Series Ethernet module, MELSEC iQ-F Series Ethernet/IP module, MELSEC iQ-F Series OPC UA Module, MELSEC iQ-F Series CC-Link IE TSN master/local module, GOT2000 Series CC-Link IE TSN Communication Unit, FR-A800-E series inverters, FR-F800-E series inverters, FR-E800-E series inverters, INVERTER CC-Link IE TSN Plug-in option, INVERTER CC-Link IE TSN Safety Plug-in option, INVERTER CC-Link IE TSN communication function built-in type, MR-J5 series AC Servos MELSERVO, MR-JET series AC Servos MELSERVO, MR-MD333G series AC Servos MELSERVO, MR-JE series AC Servos MELSERVO, MELSERVO-J4 AC Servos MELSERVO and Embedded Type Servo System Controller allow a remote attacker to cause a temporary Denial of Service condition for a certain period of time in Ethernet communication of the products by performing TCP SYN Flood attack.

MediumCVSS 5.3 · v3.1—No exploit No fix recorded
Published
Feb 27, 2024
Updated
Jun 17, 2026
EPSS
0.8% · 57th percentile

Report tools

JSON

Action score

21

Monitor

Low priority for now.

CVSS
21 / 40 · 5.3 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.8%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · Mitsubishi
5.3
NVD has not scored this yet; the score shown is the CNA’s.

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • No fixed version yet

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2023-7033

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

One daily email digest (06:00 UTC); connect a webhook for KEV listings and weaponized exploits instantly.

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

—

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Mitsubishi). Independent of NVD's CPE analysis and usually ahead of it.

  • Mitsubishi Electric Corporation CC-Link IE TSN - AnyWireASLINK Bridge Module NZ2AW1GNAL

    • all versionsaffected

  • Mitsubishi Electric Corporation CC-Link IE TSN - CC-Link IE Field Network Bridge Module NZ2GN-GFB

    • all versionsaffected

  • Mitsubishi Electric Corporation CC-Link IE TSN Analog-Digital Converter Module NZ2GN2B-60AD4

    • all versionsaffected

  • Mitsubishi Electric Corporation CC-Link IE TSN Analog-Digital Converter Module NZ2GN2S-60AD4

    • all versionsaffected

  • Mitsubishi Electric Corporation CC-Link IE TSN Digital-Analog Converter Module NZ2GN2B-60DA4

    • all versionsaffected

  • Mitsubishi Electric Corporation CC-Link IE TSN Digital-Analog Converter Module NZ2GN2S-60DA4

    • all versionsaffected

  • Mitsubishi Electric Corporation CC-Link IE TSN FPGA Module NZ2GN2S-D41D01

    • all versionsaffected

  • Mitsubishi Electric Corporation CC-Link IE TSN FPGA Module NZ2GN2S-D41P01

    • all versionsaffected

  • Mitsubishi Electric Corporation CC-Link IE TSN FPGA Module NZ2GN2S-D41PD02

    • all versionsaffected

  • Mitsubishi Electric Corporation CC-Link IE TSN Remote I/O Module NZ2GN12A2-16T

    • all versionsaffected

  • Mitsubishi Electric Corporation CC-Link IE TSN Remote I/O Module NZ2GN12A2-16TE

    • all versionsaffected

  • Mitsubishi Electric Corporation CC-Link IE TSN Remote I/O Module NZ2GN12A4-16D

    • all versionsaffected

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

No fix version is recorded for this entry. Check the references for vendor advisories.

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

National notice (Türkiye Cybersecurity Directorate / USOM)

Official security notices citing this record; remediation advice is on the agency's page.

All national notices →

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
none
Availability
low · the service can be disrupted
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
None
Availability impact
Low

Weakness class (CWE)

CWE-410 · Insufficient Resource Pool

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

nvd-secondary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.

References

Show all references (2 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records