Vulnerability in Mitsubishielectric Melsec Iq-F Fx5-Enet\/ip
CVE-2026-1876
Improper Resource Shutdown or Release vulnerability in Mitsubishi Electric Corporation MELSEC iQ-F Series FX5-ENET/IP Ethernet Module FX5-ENET/IP all versions allows a remote attacker to cause a denial-of-service (DoS) condition on the products by continuously sending UDP packets to the products. A system reset of the product is required for recovery.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.004 (33.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 34th percentile — 33.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
Weakness classification (CWE)
References
- www.mitsubishielectric.com/psirt/vulnerability/pdf/2025-021_en.pdf (vendor-advisory, Vendor Advisory)
- jvn.jp/vu/JVNVU93286687/ (Third Party Advisory, government-resource)
- www.cisa.gov/news-events/ics-advisories/icsa-26-62-01 (Third Party Advisory, government-resource)
Frequently asked questions
- What is CVE-2026-1876?
- CVE-2026-1876 is a high-severity vulnerability in Mitsubishielectric Melsec Iq-F Fx5-Enet\/ip, classified under Improper Resource Shutdown or Release. CVSS score: 7.5/10. Published 2026-03-03.
- How severe is CVE-2026-1876?
- High severity. CVSS v3 base score is 7.5 out of 10.