CVE record · CVE-2024-0803

Integer overflow in Mitsubishi Electric Corporation MELSEC-Q Series Q03UDECPU and others

CVSS 9.8 CriticalCriticalEPSS 0.010 · 64th percentile

Critical, because:

CVSS score 9.8: 9.0 or more.

Published by the CVE Program (CNA: Mitsubishi) at 14 Mar 2024, 23:59 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
Vendor	Product	Versions
Mitsubishi Electric Corporation	MELSEC-Q Series Q03UDECPU	affected The first 5 digits of serial No. "26061" and prior Other versions: unaffected
Mitsubishi Electric Corporation	MELSEC-Q Series Q04UDEHCPU	affected The first 5 digits of serial No. "26061" and prior Other versions: unaffected
Mitsubishi Electric Corporation	MELSEC-Q Series Q06UDEHCPU	affected The first 5 digits of serial No. "26061" and prior Other versions: unaffected
Mitsubishi Electric Corporation	MELSEC-Q Series Q10UDEHCPU	affected The first 5 digits of serial No. "26061" and prior Other versions: unaffected
Mitsubishi Electric Corporation	MELSEC-Q Series Q13UDEHCPU	affected The first 5 digits of serial No. "26061" and prior Other versions: unaffected
Mitsubishi Electric Corporation	MELSEC-Q Series Q20UDEHCPU	affected The first 5 digits of serial No. "26061" and prior Other versions: unaffected
Mitsubishi Electric Corporation	MELSEC-Q Series Q26UDEHCPU	affected The first 5 digits of serial No. "26061" and prior Other versions: unaffected
Mitsubishi Electric Corporation	MELSEC-Q Series Q50UDEHCPU	affected The first 5 digits of serial No. "26061" and prior Other versions: unaffected
Mitsubishi Electric Corporation	MELSEC-Q Series Q100UDEHCPU	affected The first 5 digits of serial No. "26061" and prior Other versions: unaffected
Mitsubishi Electric Corporation	MELSEC-Q Series Q03UDVCPU	affected The first 5 digits of serial No. "26061" and prior Other versions: unaffected
Mitsubishi Electric Corporation	MELSEC-Q Series Q04UDVCPU	affected The first 5 digits of serial No. "26061" and prior Other versions: unaffected
Mitsubishi Electric Corporation	MELSEC-Q Series Q06UDVCPU	affected The first 5 digits of serial No. "26061" and prior Other versions: unaffected
Mitsubishi Electric Corporation	MELSEC-Q Series Q13UDVCPU	affected The first 5 digits of serial No. "26061" and prior Other versions: unaffected
Mitsubishi Electric Corporation	MELSEC-Q Series Q26UDVCPU	affected The first 5 digits of serial No. "26061" and prior Other versions: unaffected
Mitsubishi Electric Corporation	MELSEC-Q Series Q04UDPVCPU	affected The first 5 digits of serial No. "26061" and prior Other versions: unaffected
Mitsubishi Electric Corporation	MELSEC-Q Series Q06UDPVCPU	affected The first 5 digits of serial No. "26061" and prior Other versions: unaffected
Mitsubishi Electric Corporation	MELSEC-Q Series Q13UDPVCPU	affected The first 5 digits of serial No. "26061" and prior Other versions: unaffected
Mitsubishi Electric Corporation	MELSEC-Q Series Q26UDPVCPU	affected The first 5 digits of serial No. "26061" and prior Other versions: unaffected
Mitsubishi Electric Corporation	MELSEC-L Series L02CPU	affected The first 5 digits of serial No. "26041" and prior Other versions: unaffected
Mitsubishi Electric Corporation	MELSEC-L Series L06CPU	affected The first 5 digits of serial No. "26041" and prior Other versions: unaffected
Mitsubishi Electric Corporation	MELSEC-L Series L26CPU	affected The first 5 digits of serial No. "26041" and prior Other versions: unaffected
Mitsubishi Electric Corporation	MELSEC-L Series L02CPU-P	affected The first 5 digits of serial No. "26041" and prior Other versions: unaffected
Mitsubishi Electric Corporation	MELSEC-L Series L06CPU-P	affected The first 5 digits of serial No. "26041" and prior Other versions: unaffected
Mitsubishi Electric Corporation	MELSEC-L Series L26CPU-P	affected The first 5 digits of serial No. "26041" and prior Other versions: unaffected
Mitsubishi Electric Corporation	MELSEC-L Series L26CPU-BT	affected The first 5 digits of serial No. "26041" and prior Other versions: unaffected
Mitsubishi Electric Corporation	MELSEC-L Series L26CPU-PBT	affected The first 5 digits of serial No. "26041" and prior Other versions: unaffected

Identifiers: CVE-2024-0803
CNA: Mitsubishi
Weakness (CWE): CWE-190
Tags: Mitsubishi Electric Corporation MELSEC-Q Series Q03UDECPU
Mitsubishi Electric Corporation MELSEC-Q Series Q04UDEHCPU
Mitsubishi Electric Corporation MELSEC-Q Series Q06UDEHCPU
Mitsubishi Electric Corporation MELSEC-Q Series Q10UDEHCPU
Mitsubishi Electric Corporation MELSEC-Q Series Q13UDEHCPU
Mitsubishi Electric Corporation MELSEC-Q Series Q20UDEHCPU
Mitsubishi Electric Corporation MELSEC-Q Series Q26UDEHCPU
Mitsubishi Electric Corporation MELSEC-Q Series Q50UDEHCPU
Memory corruption
Published: 14 Mar 2024
Updated: 27 Aug 2024

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
9.8	Critical	3.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	CNA (Mitsubishi)

CISA KEV Not listed.
EPSS 0.010, the 64th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

This record came from the full history of the CVE Program, published 14 Mar 2024. New records show when each source confirmed them.

Sources

References from the CNA

www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2023-024_en.pdf vendor-advisory
jvn.jp/vu/JVNVU99690199/ government-resource
www.cisa.gov/news-events/ics-advisories/icsa-24-074-14 government-resource

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.