Is CVE-2020-21174 actively exploited?

No active exploitation of CVE-2020-21174 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2020-21174 be exploited remotely?

Yes. CVE-2020-21174 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2020-21174?

CVE-2020-21174 has a CVSS score of 9.8 (CRITICAL).

HOME VULNERABILITIESCVE-2020-21174

CRITICAL

CVE-2020-21174

CWE-434Published: June 20, 2023· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

File Upload vulenrability in liufee CMS v.2.0.7.1 allows a remote attacker to execute arbitrary code via the image suffix function.

NVD Source

Risk Analysis

Liufee CMS 2.0.7.1 is susceptible to arbitrary code execution through a file upload vulnerability. This critical flaw is remotely exploitable and carries a 9.8 CVSS score.

No public exploit is known, and it is not in the KEV catalog. It is remotely exploitable with low complexity.

Recommended Action

Update Liufee CMS to a version beyond 2.0.7.1.

Generated by the CTIWATCH analysis pipeline from this CVE's metadata (CVSS, EPSS, KEV status, exploit intelligence). Verify against vendor advisories before acting.

Technical Analysis

CVE-2020-21174 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

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 9.8.