What is CVE-2020-5527?

CVE-2020-5527 is a high-severity vulnerability in Mitsubishielectric Cr800-Q, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2020-03-30.

How severe is CVE-2020-5527?

High severity. CVSS v3 base score is 7.5 out of 10.

Resource exhaustion in Mitsubishielectric Cr800-Q

CVE-2020-5527

When MELSOFT transmission port (UDP/IP) of Mitsubishi Electric MELSEC iQ-R series (all versions), MELSEC iQ-F series (all versions), MELSEC Q series (all versions), MELSEC L series (all versions), and MELSEC F series (all versions) receives massive amount of data via unspecified vectors, resource consumption occurs and the port does not process the data properly. As a result, it may fall into a denial-of-service (DoS) condition. The vendor states this vulnerability only affects Ethernet communication functions.

Vulnerability class: DoS (Denial of Service)

EPSS: 0.013 (68.2th percentile) — read the EPSS interpretation.

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.

Affected products

Weakness classification (CWE)

CWE-400 — Uncontrolled Resource Consumption

References

vultures@jpcert.or.jp (x_refsource_MISC, Vendor Advisory)
vultures@jpcert.or.jp (Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2020-5527?: CVE-2020-5527 is a high-severity vulnerability in Mitsubishielectric Cr800-Q, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2020-03-30.
How severe is CVE-2020-5527?: High severity. CVSS v3 base score is 7.5 out of 10.