What is CVE-2021-20761?

CVE-2021-20761 is a low-severity vulnerability in Cybozu Garoon, classified under Improper Input Validation. CVSS score: 2.7/10. Published 2021-08-18.

How severe is CVE-2021-20761?

Low severity. CVSS v3 base score is 2.7 out of 10.

Improper input validation in Cybozu Garoon

CVE-2021-20761

Improper input validation vulnerability in E-mail of Cybozu Garoon 4.0.0 to 5.0.2 allows a remote attacker with an administrative privilege to alter the data of E-mail without the appropriate privilege.

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

Published 2021-08-18 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 2.7 (Low). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N.

EPSS exploit prediction

EPSS: 0.008 (53.2th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 53rd percentile — 53.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000

Affected products

Cybozu Garoon
Cybozu, Inc. Cybozu Garoon — versions 4.0.0 to 5.0.2

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

cs.cybozu.co.jp/2021/007206.html (Vendor Advisory)
jvn.jp/en/jp/JVN54794245/index.html (Third Party Advisory)

Frequently asked questions

What is CVE-2021-20761?: CVE-2021-20761 is a low-severity vulnerability in Cybozu Garoon, classified under Improper Input Validation. CVSS score: 2.7/10. Published 2021-08-18.
How severe is CVE-2021-20761?: Low severity. CVSS v3 base score is 2.7 out of 10.