What is CVE-2021-30464?

CVE-2021-30464 is a high-severity vulnerability in Omicronenergy Stationguard, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2021-04-20.

How severe is CVE-2021-30464?

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

Resource exhaustion in Omicronenergy Stationguard

CVE-2021-30464

OMICRON StationGuard before 1.10 allows remote attackers to cause a denial of service (connectivity outage) via crafted tcp/20499 packets to the CTRL Ethernet port.

Vulnerability class: DoS (Denial of Service)

Published 2021-04-20 · last modified 2026-06-17.

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: 0.012 (66.9th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 67th percentile — 66.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.012 · newest: 0.012 · change: 0.000

Affected products

Omicronenergy Stationguard

Weakness classification (CWE)

CWE-400 — Uncontrolled Resource Consumption

References

www.omicronenergy.com/en/support/product-security/ (Vendor Advisory)
www.omicronenergy.com/download/file/e81f23250097e7d5e1071dfbdb7f16d2/ (Vendor Advisory)

Frequently asked questions

What is CVE-2021-30464?: CVE-2021-30464 is a high-severity vulnerability in Omicronenergy Stationguard, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2021-04-20.
How severe is CVE-2021-30464?: High severity. CVSS v3 base score is 7.5 out of 10.