Is CVE-2021-45268 actively exploited?

No active exploitation of CVE-2021-45268 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2021-45268 be exploited remotely?

Yes. CVE-2021-45268 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2021-45268?

CVE-2021-45268 has a CVSS score of 8.8 (HIGH).

HOME VULNERABILITIESCVE-2021-45268

HIGH

CVE-2021-45268

CWE-352Published: February 3, 2022· Updated: Jun 17, 2026

8.8

CVSS v3.1

Official Description

A Cross Site Request Forgery (CSRF) vulnerability exists in Backdrop CMS 1.20, which allows Remote Attackers to gain Remote Code Execution (RCE) on the Hosting Webserver via uploading a maliciously add-on with crafted PHP file. NOTE: the vendor disputes this because the attack requires a session cookie of a high-privileged authenticated user who is entitled to install arbitrary add-ons

NVD Source

Technical Analysis

CVE-2021-45268 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 8.8.