What is CVE-2021-43360?

CVE-2021-43360 is a high-severity vulnerability in Sun Ehrd, classified under Deserialization of Untrusted Data. CVSS score: 8.8/10. Published 2021-12-01.

How severe is CVE-2021-43360?

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

Deserialization in Sun Ehrd

CVE-2021-43360

Sunnet eHRD e-mail delivery task schedule’s serialization function has inadequate input object validation and restriction, which allows a post-authenticated remote attacker with database access privilege, to execute arbitrary code and control the system or interrupt services.

Vulnerability class: Insecure Deserialization

Published 2021-12-01 · last modified 2026-06-17.

CVSS v3 metric

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

EPSS exploit prediction

EPSS: 0.024 (83.4th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 83rd percentile — 83.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.023 · newest: 0.024 · change: +0.001

Affected products

Sun Ehrd — versions 8, 9
Sunnet Ehrd — versions 8, 9

Weakness classification (CWE)

CWE-502 — Deserialization of Untrusted Data

References

www.twcert.org.tw/tw/cp-132-5355-6e339-1.html (Third Party Advisory)

Frequently asked questions

What is CVE-2021-43360?: CVE-2021-43360 is a high-severity vulnerability in Sun Ehrd, classified under Deserialization of Untrusted Data. CVSS score: 8.8/10. Published 2021-12-01.
How severe is CVE-2021-43360?: High severity. CVSS v3 base score is 8.8 out of 10.