What is CVE-2020-9664?

CVE-2020-9664 is a critical-severity vulnerability in Adobe Magento, classified under Deserialization of Untrusted Data. CVSS score: 9.8/10. Published 2020-07-22.

How severe is CVE-2020-9664?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Deserialization in Adobe Magento

CVE-2020-9664

Magento versions 1.14.4.5 and earlier, and 1.9.4.5 and earlier have a php object injection vulnerability. Successful exploitation could lead to arbitrary code execution.

Vulnerability class: Insecure Deserialization

Published 2020-07-22 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.084 (94.8th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 95th percentile — 94.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.084 · newest: 0.084 · change: 0.000

Affected products

Adobe Magento — versions 1.14.4.5 and earlier, and 1.9.4.5 and earlier versions
Magento

Weakness classification (CWE)

CWE-502 — Deserialization of Untrusted Data

References

helpx.adobe.com/security/products/magento/apsb20-41.html (Vendor Advisory)

Frequently asked questions

What is CVE-2020-9664?: CVE-2020-9664 is a critical-severity vulnerability in Adobe Magento, classified under Deserialization of Untrusted Data. CVSS score: 9.8/10. Published 2020-07-22.
How severe is CVE-2020-9664?: Critical severity. CVSS v3 base score is 9.8 out of 10.