What is CVE-2021-40102?

CVE-2021-40102 is a critical-severity vulnerability in Concretecms Concrete_cms, classified under Deserialization of Untrusted Data. CVSS score: 9.1/10. Published 2021-09-24.

How severe is CVE-2021-40102?

Critical severity. CVSS v3 base score is 9.1 out of 10.

Deserialization in Concretecms Concrete_cms

CVE-2021-40102

An issue was discovered in Concrete CMS through 8.5.5. Arbitrary File deletion can occur via PHAR deserialization in is_dir (PHP Object Injection associated with the __wakeup magic method).

Vulnerability class: Insecure Deserialization

EPSS: 0.013 (68.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H.

Affected products

Concretecms Concrete_cms
N/a — versions n/a

Weakness classification (CWE)

CWE-502 — Deserialization of Untrusted Data

References

cve@mitre.org (Permissions Required, Third Party Advisory, x_refsource_MISC)
cve@mitre.org (x_refsource_MISC, Release Notes, Vendor Advisory)

Frequently asked questions

What is CVE-2021-40102?: CVE-2021-40102 is a critical-severity vulnerability in Concretecms Concrete_cms, classified under Deserialization of Untrusted Data. CVSS score: 9.1/10. Published 2021-09-24.
How severe is CVE-2021-40102?: Critical severity. CVSS v3 base score is 9.1 out of 10.