What is CVE-2020-11677?

CVE-2020-11677 is a high-severity vulnerability in Cerner Medico, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 8.8/10. Published 2020-04-29.

How severe is CVE-2020-11677?

High severity. CVSS v3 base score is 8.8 out of 10.

Buffer overflow in Cerner Medico

CVE-2020-11677

Cerner medico 26.00 has a Local Buffer Overflow (issue 3 of 3).

Vulnerability class: Buffer Overflow

Published 2020-04-29 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.007 (49.5th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 50th percentile — 49.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000

Affected products

Cerner Medico — versions 26.00

Weakness classification (CWE)

CWE-120 — Buffer Copy without Checking Size of Input (Classic Buffer Overflow)

References

www.x41-dsec.de/lab/advisories/x41-2019-008-medico/ (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2020-11677?: CVE-2020-11677 is a high-severity vulnerability in Cerner Medico, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 8.8/10. Published 2020-04-29.
How severe is CVE-2020-11677?: High severity. CVSS v3 base score is 8.8 out of 10.